Laurel starts working at the coffee shop with Maggie, but with disastrous results. Meanwhile, Jen finds out she isn't able to carry a child to term, and the news drives her further away from Chris, Gil & Erin make up when she learns his play is being turned into a film and Kevin has issues with how Tracy sees him.

Shannon comes out of the closet, causing Maggie to have second thoughts about her roommate. Meanwhile, Mark and Paige go out on a real date, Wayne's locker is vandalized with homophobic graffiti, and Erin sets her sights on Josh.

Craig breaks up with Anika and Mark's French lessons grow tense when Laurel becomes his tutor. Meanwhile, a homeless Shannon moves in with Jennifer.

Erin and Chris go out on a date, but to Erin's disappointment, all Chris really wants is Anika. Laurel tells Jen about her and Mark which causes Jen and Mark to argue about Laurel. Scott asks out Brenda. Craig and Laurel work on a Save the Frogs campaign.

Brenda and Scott go on their first real date...to her church youth group. Mark and Jen's sex life becomes the talk of the school when Laurel mistakenly mentions something to Craig, while his sister Erin is nearby. Craig tells Shannon about his endangered frog project. Chris apologizes to Anika, who softens towards him, but is completely unaware of his bet with Gil, unlike Erin who reveals to Chris that she knows. Mark attempts to mend his friendship with Laurel but is shot down. Mark and Jen try to determine who told about their love life and Jen falsely accuses Laurel when it was really Shannon, Jen's best friend.

Anika completely blows off Chris. Shannon attempts to mend fences with Jen. Erin tries to get to the bottom of the Chris and Anika incident. Scott is impressed by Brenda's embracing of his ""religion"" and tries to live up to her expectations. Erin, in an attempt to sway Chris's interest in Anika, tells him Anika is a virgin. Unfortunately for Erin, this only makes Gil and Chris's bet rise. Laurel ends things with Mark for good. When Mark learns his dad is cheating on his mom again and has left, this encourages him to solidify things with Jen.

It's Mark and Jen's six-month anniversary and she plans on having sex with him. When Mark and Laurel are spotted hanging out, Anika and Erin spread rumors about them which hurts Jen and leads Scott feeling betrayed. Laurel apologizes to Jen and confronts Anika and Erin, making them hate her even more. Laurel and Shannon meet. Scott gets drunk and embarasses himself in front of Laurel. Jen and Mark have a romantic anniversary but she feels she's not ready to sleep with Mark who says it's fine. Later that night Cat spies Mark exchanging emails with Laurel.

Cat and Mark try to find their missing little brother. Scott attempts to ask out Laurel. Anika spreads rumours about Laurel. Mark and Laurel meet for the first time. Jen finds Travis, Mark's little brother sleeping in her car. Gil accidently insults Chris. Erin spies Mark and Laurel having coffee together. Cat busts Mark on his email from Laurel.

Mark considers a job offer that would cause him to quit school. Meanwhile, Anika & Craig compete for a job at the warehouse, things continue to go downhill for Chris & Jen, and Gil & Kevin attempt to avoid their girlfriends' wrath.

Jen's new musicial interest & friends come between her and Chris. Meanwhile, Gil tries desperately to make up with Erin, Mark has his hands full with his brother Travis & with Laurel's return.

While Laurel is away in Japan, Mark rents her room in Maggie's apartment. Meanwhile, Jen and Chris attempt to continue their relationship when their pregnancy takes an unexpected turn and Gil is in hot water when Erin catches him with another girl.

Mark and Paige run into trouble planning their first date, and Erin is ecstatic when she thinks that Derek has feelings for her. Meanwhile, Shannon worries how Maggie will feel when she brings someone home.

Laurel and Mark attempt to move on with their lives, by puttingt the past behind them. Meanwhile, Gil thwarts Bekka's attempt to ask out Kevin and Craig attempts to thwart ""the man"".

Laurel becomes jealous when Mark and Tracey work together at a school car wash. Meanwhile, when Kat agrees to go on a date with Gil, he soon learns she has an ulterior motive and Jen & Chris hit a snag in their relationship.

Mark anxiously awaits Laurel's return from Houston, and Jennifer learns Shannon is no longer living at home because she came out to her parents. Meanwhile, Mitch, a new student at McKinley, ruffles Anika's feathers when he bullies her cousin.

Anika decides to get back at Jennifer for refusing to write a glowing editorial for her. Meanwhile, Laurel and Mark make up, and Erin and Kevin become a couple.

Gil posts a list of the ""hottest"" girls at his school on the Internet, which could jeopardize Kevin & Erin's growing courtship. Meanwhile, Laurel becomes increasingly stressed about finding a place of her own to live, and Anika enlists Bekka's help to petition against Jennifer's newspaper editorials.

A family crisis causes Mark and Laurel to put off their plans to move in together. Meanwhile, Anika starts a food-bank campaign to disprove claims that she's shallow and Chris becomes even more infatuated with Jennifer.

Laurel and Mark decide to live together when Laurel announces she's staying in Edgemont without her parents. Meanwhile, Jennifer tries to persuade Shannon to challenge Anika's presidency and Kevin asks Craig for advice on winning Erin's heart.

Jennifer walks in on Laurel and Mark during an intimate moment. Erin and Anika get into trouble because of their Web site about Chris. Craig has a difficult time cancelling his date with Kat.

Gil learns he was wrong to think Laurel had feelings for him and Mark tells Paige why he bailed out of their potential date. Meanwhile, Chris starts to scrutinize Jen's eating habits.

Mark and Jen deal with the aftermath of their night together. Scott wonders if Brenda really likes him. Chris vehemently pursues Anika in order to fulfill his bet with Gil. Craig tries to live down ""his little accident"" at Captain Java's. Mark strings Laurel along as he tries to come to grips with his feelings for Jen. Laurel's photo of a shirtless Mark gets passed around the school. A hurt Jen ""subtly"" mentions her budding sex life with Mark to Laurel. Shannon warns Mark of the repurcussions of his situation. Chris and Anika have a date where he tries to go too far. Shannon and Jen have a fight over Mark.

After their illicit kiss, Laurel tells Mark she can't be with him when he's still with Jen. Mark tells Laurel he will break up with Jen. While feeling she may be losing Mark, Jen contemplates having sex with him in order to keep him. Scott throws an Equinox party. Craig leads a one-man protest at the Cafe Java but when he chains himself to the table and insults Maggie, she leaves him there overnight. When Anika hears the ""torrid affair"" rumours going around about her, Erin tells her it was Laurel who started them (when really it was a jealous Erin). Laurel and Jen work uncomfortably on a school project together. Mark goes over to Jen's to end things with her but they end up having sex. When Mark falls asleep, Jen is left looking very unsure of herself.

Gil gets into trouble over the source material for his play, and Craig is ignored by the women of A.C. McKinley. Meanwhile, Jennifer continues to cope with her pregnancy.

Jennifer decides to have her baby, instead of getting an abortion. Meanwhile, Laurel warns Mark about going out with Paige, while also being a source of titilation for Gil when she takes a role in his play.

Gil tries to make amends with Erin and Kevin loses it when Bekka dumps him for Travis. Meanwhile, Jennifer has a health scare and Laurel gets offered a six-month modeling gig in Japan.

Mark and Laurel reconcile, and he insists that she take the job in Japan. Meanwhile, Gil is heartbroken when Kevin escorts Erin to the dance, prompting Erin to realize that Gil truly cares, and Chris proposes to Jennifer.

Scott falls for the new girl in school, Laurel. Mark deals with his parents breakup and impending divorce, his own suspension from school and the disappearance of his little brother. Anika declares war on Laurel after a nasty comment about her wardrobe.

Things get steamy when Mark poses for Laurel's photo shoot and the two share an illicit kiss. When Erin attempts to dissuade Chris's interest in Anika by saying she is having a steamy affair with a grade 12 guy, it only intrigues Chris more. Chris wagers against Gil that Anika will have sex with him. Scott pursues Brenda and upon discovering she's religious decides to become a Druid. Jen becomes increasingly more suspicious of Mark and Laurel and for good reason too.

Anika and Chris go out on a date. Scott buys Brenda underwear but rethinks it before he gives it to her. Mark tries to make up with Jen. Mark, Cat and Travis try to cope with their parents' impending divorce. Chris tells Erin to back off when she continues to come on to him.

Mark tells Jen the whole truth about him and Laurel. Anika learns about the bet that Chris and Gil have going on her. Erin is once again rejected by Chris. Anika and Erin declare war on Chris after they mend their friendship. After Chris's rejection Erin is led straight into the waiting arms of Gil.

Jen breaks up with Mark. Erin blows off Gil after their makeout session. Chris spreads rumours about Anika as does Gil about Erin. Cat distributes teacher evaluations. Shannon and Laurel decide to be friends. Jen's brother Derek gets arrested. Scott wants to change his relationship with Brenda.

Jennifer tries to set up Shannon and Jordan. Mark learns some shocking news about Laurel's past. Derek's community-service work at the school takes a bad turn.

Jen has a horrible time at the school dance. Mark has a difficult time getting over Laurel's past relationship with an older guy. Shannon and Craig realize they have feelings for each other.

Mark finds himself in a difficult dilemma when he discovers Laurel is leaving Vancouver. Erin finds out Kevin has feelings for someone else. Derek gets himself into even more trouble after being provoked by Chris.

Laurel and Mark argue over how her video should conclude. Craig and Shannon are nervous about their on-screen kiss. Kevin is pleasantly surprised when he lands himself a date with both Erin and Brenda.

Mark finds a bottle of vodka in the rec room. Erin tries to ruin Kevin's date with Brenda. Anika helps improve Chris's public image.

Kat makes plans for a weekend trip with Kurt. Shannon and Craig decide to end their relationship. Kevin tries to find out why Erin and Brenda are angry with him.

Mark and Laurel are surprised when they discover Laurel is leaving earlier than expected. Gil and Kevin fight over Erin. Jen learns Shannon is confused about her sexual identity.

While Jennifer and Shannon try to figure out Anika's campaign strategy, Anika and Chris attempt to come up with a plan to use Shannon's poem against her. Mark and Laurel discuss their future.