Omega
Unfortunately for them, the Argents return early, and her mom comes into the room to inspect it. Scott is out of the room, clutching his clothes, hoping not to be caught. Scott takes off while Allison convinces her mother that she was just studying.
Allison overhears her father putting together a hunting party and sees him and three of his men leave in three SUVs. Allison secretely takes off and shows up at the hospital after Lydia disappears to tell Scott and Stiles that the hunters are also looking for Lydia. She joins them in Stiles' jeep.
Stiles queries her if Lydia is turning a werewolf, will the hunters kill her. Allison responds her parents won't tell her anything, just that they'll talk after her aunt's funeral after "the others" arrive, which they won't tell her their identity either. Stiles quips that "(her) family's got some serious communication issues to work on."
Stiles triggers a snare, trapping Scott, and then he and Allison hide when Chris Argent and his hunters arrive. Chris threatens Scott and then eventually leaves, and the three of them continue into the house, but they don't find Lydia.
The next day at school Allison heads to her locker after class to get her clothes for Kate's funeral. A note falls out of her locker. She questioningly picks it up and it says "Because I love you". She smiles remembering her and Scott's declarations to one another. Matt Daehler compliments her on the dress, which is an odd thing to say about a dress for a funeral, and then Allison hears people in the hall whispering about her murderous aunt. She gets upset, but Scott pulls her aside to talk to her and comfort her. He assures her he will be there, just not in plain sight.
An Gerard Argent elderly man arrives and greets her parents. He introduces himself as Gerard, the grandfather that she barely knows as he says the last time she saw him was when she was three. Allison steals a look at Scott.
Shape-Shifted
Allison continues to have secret meetings with Scott. Her next one is at midnight. They meet at the overlook point where Scott howled to find Derek. Scott asks her about her grandfather, Gerard. Allison replies she doesn't actually know him at all that he's only sent her a cheque in the mail every year for her birthday. Scott tells Allison that they have to be more careful than ever. Allison assures him her prejudicial parents aren't going to split them apart
The next day, Allison escorts Lydia to her first day back at school. Allison encourages her by telling her that everyone is only staring because she lost a few pounds. It's the boost Lydia needs to get through the awkwardness of everyone knowing she was running around naked.
Later, Allison catches her father and Gerard talking about whether they should kill Isaac Lahey, although she doesn't know who they're talking about. They close the door to keep her out of the conversation. Later, after Allison sees a police officer in their house, Gerard and Chris call her in to talk to her. Allison and Stiles talk on the phone about the officer that Gerard has sent to kill Isaac while he's in police lockup. Allison's portion of the plan is to slow the officer down. She does this by shooting out his tires and then shooting him in the leg.
That part of her job done, Allison goes to meet Scott at the Lahey's house. Scott asks her to chain him into the Lahey freezer. Allison is horrified and doesn't want to do it, but he begs her to because it's the full moon and he doesn't want to hurt her. Somehow, Allison gets chains underneath the freezer while Scott is inside and locks it shut. As she's leaving, Allison's flashlight goes out and a strange, reptilian creature scares her. She screams, and Scott fights his way out of the freezer to save her. The creature leaves without putting up a fight, though.
Ice Pick
Allison is at the gas station filling up her car. Suddenly, the lights in the station go out and someone grabs her and throws a bag over her head. When they pull it off, she's tied to a chair and looking at her father, who is similarly tied. Chris undoes his bonds and explains that this is a training exercise. He says that Argent women are trained to make decisions and then gives her an arrow to use to break herself free. It takes her two and a half hours to get out of the Hale House.
The next day at school, everyone is in the gym trying to climb a rock wall. Erica Reyes tries to go up, but Allison tells the Coach that Erica has epilepsy.
Later that day, Allison and Lydia are hanging out at the Argents' house. Chris takes Allison aside and asks her to keep an eye on Lydia, because they're still not sure why she wasn't turned by the werewolf bite. A short while later, Scott, Allison, Stiles, and Lydia go to the ice rink to skate around after hours. Stiles bought the keys from Boyd, who works at the rink. Allison is a much better skater than Scott, and she has to teach him how to stay upright, even though he figured his werewolf abilities would make him a natural. They go and take photos in the photo booth, but the only one that turns out is the one where Scott keeps his eyes closed.
The next day at lunch, Allison tries to warn Scott that the hunters are gearing up for war with Derek and she doesn't want him in the middle of it, but Scott can't help trying to help people.
Abomination
A few days later, Allison again checks her car window for her meetup time with Scott, but this time Gerard surprises her. He demands to talk to her and makes her promise that she trusts him. She misses meeting up with Scott because of this and finds a note from him scrawled on a rock. He had to leave to pick up Stiles from Armor Tire where Tucker was killed.
At school the next day, Stiles delivers messages back and forth between Scott and Allison, so they don't leave any record of communicating on their phones. Stiles asks Allison about the bestiary that Dr. Deaton said her family would have. Allison has seen an old leather book in Gerard's possession and assumes this is it. They will need to get Gerard's keys in order to get into his office to look for it. Allison escorts her grandfather to the lacrosse game an watches him put his keys in his pocket. At the game, she pretends to be cold so he'll give her the coat, and then she slips Stiles the keys.
After the game Allison and Gerard bring Scott home for dinner. Everyone is distressed, but Allison and Scott try to make the best of it by talking about lacrosse. After dinner, Allison and Scott head upstairs, and Allison shows Scott a safe in Gerard's room. Scott is able to open the lock, and they find a leather book that turns out to be a cookbook. Allison suddenly realizes that the bestiary must be on the USB drive that Gerard keeps on his keys. The keys are back in his office at the school, so Scott quickly leaves.
Venomous
Now that they know what they're hunting, Derek and his pack have started testing possible kanima suspects. In Chemistry, Scott lets Allison know that Isaac and Erica are going to test and possibly kill Lydia. Allison tells Lydia not to talk to either of them. Lydia wonders how Allison can take looking at Erica hit on Scott and not get jealous. Allison just says there's nothing to get jealous of. When they rotate chemistry partners, Allison eventually ends up with Erica. Erica tells her that she and Scott aren't going to last and threatens to start a fight right there. She digs her claws into Allison's leg, but Allison doesn't react.
Isaac gives Lydia the venom test, and she doesn't get paralyzed. Since she failed, Derek is prepared to kill her. Allison, Scott, and Stiles meet in Coach Finstock's office to decide what to do. Scott thinks he can stall Derek long enough for the others to get away. Allison thinks the bestiary could have answers, but Stiles points out they can't read it. Allison decides to ask Ms. Morell if she can translate any of it. Scott asks Allison to not do anything dangerous, and she takes offense at the idea that she can't protect herself. She pulls a crossbow out of her bag to prove a point. Stiles almost shoots Scott with it by accident.
Allison takes the bestiary pages to Ms. Morell and gets her best translation. Then, she, Jackson, and Stiles take Lydia out of the school and head toward Scott's house. Jackson takes Lydia up to Scott's room, while Allison and Stiles stake out the front door. Derek and his pack are outside, and Allison calls Scott to tell him that he needs to get home immediately. Stiles suggests shooting one of the wolves. He tells Allison to start with Derek, but since Scott can catch and arrow, she's pretty sure Derek can too. Stiles suggests one of the others then, but Allison only sees two others, instead of three.
Isaac attacks Allison from behind before tossing around Stiles. Allison runs upstairs to make sure that Lydia is safe and sees kanima venom on the windowsill. She puts some venom on her crossbow bolt and turns around to deal with Erica. She shoots at her, and Erica catches the bolt, but that's what Allison was expecting. As Erica crumples, paralyzed, Allison brushes her hair back and taunts her, calling her a bitch. Scott arrives and takes care of Isaac, tossing both betas out of his house. Everyone heads outside to see the kanima running along the roof. Lydia them comes out the front door, and they all know that it can't be her.
Frenemy
While Derek, Scott, and Stiles chase the kanima, Allison takes Lydia home. She asks Lydia to promise to keep quiet about what she saw, but Lydia doesn't even know what she saw. Allison also learns that Lydia has never been in love with someone the way Allison is in love with Scott.
At school the next day, Gerard questions Allison about Jackson's disappearance. She doesn't do a great job lying, so he knows she's hiding something. After being threatened by her grandfather, Allison goes to English class to learn that her mother is now the sub. Her mom threatens Scott and tells Allison to find someone else to date. Allison learns enough that she can report to Stiles that the police know that Jackson is missing. When she tells him, Stiles holds onto Jackson's phone like it's lethal, and they get into the prison van where they've been keeping Jackson to change locations.
She meets up with Scott and Stiles at the overlook. Scott wasn't able to find Danny's tablet, which had the missing video from the tape Jackson made of himself on the full moon. Since Allison learned from Ms. Morell that the kanima seeks a friend, they assume that the friend got the tablet to protect Jackson. When night falls, Allison and Scott cuddle in her car. She tells him that she doesn't like falling asleep next to him because he's always gone when she wakes up. They talk about their future. Allison wants to be with Scott for the rest of their lives. He wants the same but suggests she not get into too good a college. They have sex in the back seat and fall asleep until Stiles bangs on the window to wake then up. He shows them the prison van busted open and Jackson missing.
Allison returns home to find Lydia sitting in her room waiting for her. Lydia says she wants to talk, but Allison tells her that she doesn't have time for her right now. Lydia gets incensed that no one ever has time for her anymore, and Allison replies angrily that she can't just expect everyone to drop everything just because she needs something. Allison says that she needs someone to read archaic Latin, which Lydia apparently knows. Lydia corrects Ms. Morell's translation and says that the kanima doesn't seek a friend, it seeks a master.
Restraint
Allison reports this difference to Scott and Stiles as soon as she's able. They realize that Jackson must not be able to remember what he's doing. Allison brings Scott and Stiles a tablet with Lydia's translation on it at the library the next day. She tells them that she had to tell Lydia they were part of an online gaming community that hunts monsters. Stiles stares at her because he is a member of such a community. Part of the translation says that the kanima can't become a werewolf until it resolve something in its past. Allison suggests that it could have something to do with Jackson's birth parents.
Because of the restraining order and whole kidnapping thing, Allison volunteers to ask Jackson directly about his parents. She finds him in the boys locker room, but runs into Matt on her way in. He asks her to a rave on Friday night, and she agrees. She goes into the locker and finds Jackson naked and acting weirdly aggressive. He pins her against the wall and demands to know what she wanted to talk about. She tries to get away and gets more upset the more he crowds in on her. Her heart is beating so hard that Scott can hear it from across the school and rushes from his Chemistry test to help her.
Jackson attacks Allison, but she is able to defend herself, and when she does, Jackson comes out of his trance. He doesn't remember their conversation. Scott doesn't care and starts fighting with him despite Allison's protest that she's okay. The boys wreck the locker room, and Allison gets detention along with the rest of them. While they're reshelving books, Stiles tells Allison and Scott about what he and Erica learned about Jackson's birth parents: that Jackson was born out of his mother's dead body. Allison wonders if the car accidents they died in was really an accident. Before they can talk to Jackson about it, the kanima attacks. They watch Jackson scrawl a warning on the blackboard and then escape. Allison stays to help Matt, who was attacked by the kanima, while Stiles and Scott rush Erica to Derek because she's having a seizure.
Raving
Chris knows that Allison knows more than she's said. He takes her to the morgue to impress upon her the reality of what's happening. He says that she's responsible for those deaths because as Argents they are responsible for stopping the supernatural. Allison is convinced and asks her father what he wants to know. She tells him everything about the who the kanima is. Based on that, the Argents decide to try to capture Jackson at the rave on Friday.
She meets up with Scott the next day at school to tell him that she told her father. Scott isn't really concerned. He's more worried that her mom seems to know that they've been seeing each other. Scott tells her to date someone else and be seen going out with someone else. Allison admits to having accepted a date with Matt, which Scott thinks is perfect. Allison is skeptical that she should kiss Matt for real, and Scott agrees. They kiss.
At the rave, Allison is supposed to find Jackson and text her father when Jackson is sufficiently far away from the crowd. When she goes in, she doesn't expect to see Scott there and they argue, because the hunters crashing the party will ruin Scott's plan for capturing Jackson. Allison doesn't know what to do. Scott just yells at her to stay out of the way.
She spends the rest of the rave trying to figure out what to do and is terrible about pretending to have a good time with Matt. He tries to fix it by bringing them closer to the DJ, which makes them bump into Mr. Harris. There's an awkward moment. Eventually, Allison and Matt sit on the sidelines. She admits that she's not having a good time, and he kisses her. She doesn't like it and tries to play it off as no big deal, but they both know that it was and he shouldn't have done it. Allison leaves the rave to make a call and runs into Gerard. She apologizes for everything going wrong, but he doesn't think it has.
Party Guessed
Allison doesn't know that her mother was bitten by Derek during a fight to save Scott. While her father and mother go home to make a plan, Allison drives Matt back to his house. She again tries to play the kiss off as no big deal. When Matt leaves his camera in her car, she snoops through his photos and learns that he's been stalking her. He has photos of her in her room. She pretends she didn't see them and refuses Matt when he tries to invite her inside to look at more pictures he's taken. He doesn't want to take no for an answer, but eventually she comes up with enough excuses that she can leave. She drives away in a rush.
A day or so later, Lydia arrives at Allison's house fresh from Macy's with clothing options for her birthday party. Lydia's party is always considered the event of the year. Allison is concerned that Lydia didn't send out invites, but she's never had to send out invites before and assumes that this year will be like all other years. While they're checking out the clothes, Allison's mother tries to get a chance to talk to her. Allison blows her off, and Victoria leaves without saying a proper good-bye.
Lydia's party is basically empty, and Allison catches up with Scott and Stiles. She's concerned that the party isn't well attended and feels that they should help Lydia out. Scott isn't in a forgiving mood, but he agrees to call the lacrosse team and make them show up. Allison spends most of the party alone because Scott hasn't apologized for yelling at her at the rave. Matt catches up with her and asks for a chance to talk. She gives him a couple of minutes, but he only makes things worse by telling her that she's full of herself if she thinks he can't find another pretty girl to photograph. When Matt puts his hand on her to stop her from walking away, Allison grabs him and knocks him to the ground.
As she walks away, she starts to hallucinate because of the wolfsbane that Lydia put in the punch. Allison sees another version of herself, a cold-hearted killer who shoots her in the stomach and mocks her for calling to Scott for help. When this other Allison is about to shoot again, the vision ends.
While Allison is at the party, her mother commits suicide in her room. Victoria wanted to be close to her daughter when she died.
Chris calls her from the hospital, and Allison arrives crying. She tells her father that if this is a training session she'll kill him, but he assures her that it isn't, and they cry together.
Fury
She's still grieving when Gerard comes in to give her a letter from her mother. He manipulates her vulnerable state, turning her sadness into fury and a thirst for blood. Gerard wants Allison to go after Derek. He gives her the letter and leaves. After she reads it, Allison burns the letter. She doesn't know that the bite happened while Derek was saving Scott. Allison angrily throws out all of her girly things and dresses for battle. She gets our her arrowheads and prepares.
Matt has taken Scott, Stiles, Sheriff Stilinski, Melissa McCall, and Derek hostage. Allison gets a text message from Matt on Scott's phone asking for the bestiary, because Matt wants to know why he's turning into a kanima. The Argents get out the floor plans for the sheriff's station and ask Allison to plan the raid. Allison says that Derek is their priority and that they will kill any of Derek's pack who get in the way. Gerard is pleased with this newfound bloodlust.
Allison and her father enter the station as a team. As they arrive, they hear Sheriff Stilinski trying to break the bar he's cuffed to from the wall. Derek is also back to being mobile after being struck with kanima toxin. Allison finds Scott, and he's shocked to see her. He doesn't know about her mom and doesn't know why Allison is demanding where Derek is. When Scott won't help, Allison continues the search on her own. She and Chris get attacked by the kanima, and Allison puts a crossbow bolt right through its head. It pulls it back out, and Allison runs. She switches to her ring knives and hides under a desk. When the kanima's back is turned, she leaps over the desks and drives the blades into it, but to no effect. The kanima grabs her by the throat and then nicks her with toxin.
Matt comes over to gloat and is about to kill her when he hears something behidn him and goes to investigate. Chris grabs Allison and gets her out of there.
Battlefield
In the days after her mother's death, Allison and Chris become more of a team, systemically searching Beacon County for Derek and his pack. They decide to get to him through his betas and set up a trap for Boyd and Erica. The hunters use wolf calls to try to attract them. Boyd and Erica fall for it and are soon running through the woods trying to get away from Allison and Chris on an ATV. Allison shoots Erica in the leg and is about to shoot her again, but Boyd catches the arrow.
She fills Boyd with arrows, her face expressionless and eventually a little pleased the more Erica screams at her to stop. Eventually, her father shoots the bow from her hand because she was going to kill one of them if she kept going. He doesn't like the person Allison has become. She thinks she's taken to her leadership role quite well. After they capture Boyd and Erica, Allison calls "grandpa" to tell him that the job is complete. She shushes her father in the process.
Master Plan
After they've brought Boyd and Erica to the basement, Gerard and Allison talk for a little bit, and he advises her to get some sleep because it's going to be a very interesting next 24 hours. Chris tries to talk to Allison, but she tells him she's tired. She also reminds him that he owes her a new bow. Chris doesn't like what Gerard has been doing to her, so he cuts the cord on her crossbow to try to keep her out of the coming fight.
As Gerard's plan comes together, Scott, Derek, Peter, Isaac, and Chris deliver Jackson to a warehouse. Gerard and Allison arrive, and Gerard gloats that he was able to get Derek to come out of hiding. Allison shoots Isaac and later stabs him several times as everyone starts fighting. When Allison starts after Derek, Scott steps in her way. Gerard has the kanima grab Allison by the throat, and everyone learns what Gerard has really been after: the Bite. Allison and Chris are shocked and incensed, because Victoria killed herself because she was going to turn. Gerard threatens to kill Allison if he doesn't get what he wants, so Scott grabs Derek and forces his mouth open so Gerard can give himself the Bite.
They all watch in horror as Gerard's bite bleeds black ooze. Allison escapes from the kanima and joins Scott just as Stiles crashes into the warehouse. They all watch as Lydia brings Jackson back to himself and then as Derek and Peter stab him with their claws. Allison and Scott take each other's hands as Jackson turns into a werewolf and embraces Lydia.
Later that night, Allison breaks up with Scott. He's okay with it because he believes they will be together eventually. Scott leaves, and Chris enters the room. Emotionally exhausted, Allison moves into the embrace of her father's arms.