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.
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.
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.
Mark misleads Jen while falling for Laurel. Scott meets Brenda, the girl of his dreams. Cat reveals to Jen that Mark has been emailing and talking with Laurel behind her back. Erin pines over Chris, who's more interested in Anika. Jen reads Mark and Laurel's emails.
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.
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.
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.
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.
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.
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.
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.
Anika tries to rekindle Mark and Laurel's romance. Kat gets expelled from school and Jennifer considers getting back together with Mark.
Craig organizes a rally to support Kat's cause. Erin and Anika befriend the new girl Kelsey, who also happens to be Chris's little sister.
Erin and Anika revel in the attention their website is getting, while denying to Chris that it's their doing. Laurel tries to decide whether to end things with Mark. Jen worries about her brother's court date. Craig continues to support Kat, while she develops a crush on him.
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.
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.
While the election results are announced pitting Anika against Shannon, Laurel and Mark meet for the very last time but things don't go quite as planned.
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.
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.
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.
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.
Kat decides to move back home and clashes with Laurel. Meanwhile, Maggie is on a search for a roommate, Anika is accused of plagerisma and sells out Erin, in order to save herself, and Chris and Jen get closer.
Laurel becomes upset when Mark's friends ruin her plans for a romantic dinner. Meanwhile, Jen and Chris's relationship is put to the test when Derek returns from jail, and Shannon helps Craig with a benefit concert.
Laurel worries that Mark's new job will keep them apart. Meanwhile, Jen asks Chris to apologize to Derek and Anika is impeached after helping Craig with a project.
Craig realizes he has feelings for Anika after finding out that she plans to transfer to another school. Meanwhile, Laurel becomes upset when Josh sharply criticizes her film.
Jennifer and Shannon get into a heated argument at Laurel's slumber party. Meanwhile, Kat finds out her anonymous online friend lives nearby, and Kevin becomes upset when he sees Erin flirting with Mark.
Derek's temper frightens Laurel after he loses his job. Meanwhile, Kat finds out the identity of her long-term Internet correspondent, Demonslayer, and Josh tells Laurel how he feels about her.
Craig tries to steal the limelight from Anika when she plans a special video screening, but it only ends up bringing them closer. Meanwhile, Laurel finds out Mark is failing at school, Kat tries to avoid Gil, and Chris woos Jen with opera tickets.
An angry Mark discovers Josh knows about his problems at school. Meanwhile, Laurel's video diary falls into the wrong hands, and Anika is hurt when she finds out Craig doesn't like his makeover.
Mark and Laurel's relationship is put to the test after Mark sees Laurel's video diary. Meanwhile, Anika and Erin get into a fight over Craig.
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.
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.
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.
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"".
A shocked Jennifer discovers the reason why she's been feeling sick. Meanwhile, Craig and Kat debate on the school radio, and Kevin applies for a job at the warehouse, in order to make money to take out Bekka.
Mark is shocked when Paige arrives for work with her baby. Meanwhile, at Chris's 18th birthday, Jennifer grapples with how to tell him about her pregnancy and Bekka decides to teach Gil a lesson when he interferes in her & Kevin's relationship.
Craig and Shannon call Gil's bluff on a dare, but their plans to rig the outcome are thwarted by an interfering Anika. Meanwhile, Mark encourages Paige to go back to school and Jen & Chris find themselves at a crossroads about their situation.
Paige goes back to school as a single mom and Craig & Anika's relationship starts to deteriorate. Meanwhile, Shannon and Craig are let off the hook to streak, only to be coerced into modeling lingerie in Anika's fashion show and Gil tries to use Paige's baby as a 'chick magnet'.
Craig develops erotic fantasies about Shelby when he sees her in the dress Anika designed, and Chris finally learns about Jen's secret. Meanwhile, Paige is flattered when Mark shows interest in her love life and Wayne angers Mitch and is left stranded in the school hallway...naked.
Jen tries to decide what to do about her pregnancy and Chris, having discovered Jen's secret, takes off for Seattle to clear his head. Meanwhile, Anika's fashion show is disrupted when Craig declares his passion to Shelby in his boxer shorts, Mitch and Travis pay the price for their prank, and Mark and Paige connect over their brothers' situation.
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 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.
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.
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.
Anika hijacks Laurel's part in Gil's play, portraying Erin as sex-starved vixen. Meanwhile, Paige and Mark try to regain their jobs after Tyler fires them from the warehouse, and after watching the play, Derek reconsiders a relationship with Erin.
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.
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.
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.
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.
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.
Mark hosts a poker game for all the guys with high stakes results. Meanwhile, Jen continues to drive Chris further away and keeps her budding musical interests apart from him; Craig attempts to deal with Anika and the damage she caused to Tyler's car.
Tyler & Anika play an extortion-filled version of cat and mouse, that leaves Craig the victim. Meanwhile aptitude test results affect many, including Mark who's aptitude for art leads him into taking the starring role in Gil's play; and Chris & Jen face an ultimatum.
When Laurel's modeling money comes through, she's inundated with people and their ideas for her money - including Mark; Gil desperately tries to fire Erin from his movie; Shannen misunderstands when her friend Stevie asks her to a dance; and Chris & Jen attempt to deal with post-breakup issues.
Filming begins on Gil's movie with distrastrous results: Becca continues to fawn all over Mark, jeopardizing her relationship with Travis, and Gil & Erin get into a fight when she takes a love scene with Mark too far. Meanwhile, Shannen finds it difficult to continue being friends with Stevie, when she rebuffs her romantic intentions.
Jen's brother Derek, returns to town & manages to to play knight in shining armour & rescue Anika; Laurel & Mark clash at their apartment after their unofficial breakup; Shannen & Stevie make plans now that they're a couple; Mark attempts to tutor Travis when he learns he's failing math, but once again Becca interferes.
Laurel begins looking for a place of her own, when Maggie & Mark make it clear their apartment is too crowded; Shannon's up in arms when the principal won't let her talk about her being a lesbian on Tracey's radio show, but her actions may cause her to lose Stevie; Anika learns more about Derek; Derek disapproves of Jen's friendship with Eddie, as Eddie prepares to move on.
Jen contemplates leaving with Eddie; Shannon attempts to patch things up with Stevie, after outing her to her parents; Gil continues planning his grad stunt; Chris & Mark help Laurel move with disastrous results; Wayne finds his soulmate.
Laurel & Mark bask in the afterglow of their first night together, but old problems attempt to creep up on them; Gil's Cancun grad stunt plans become a little richer; Jen learns some hard truths from Eddie's girlfriend; Derek pitches an investment deal to Anika; when faced with more trouble with Wayne's parents, Travis takes off. Everyone assumes the worst, when Gil vows revenge against Anika, and the grad money goes missing; Laurel & Mark make plans for their future; Jen & Chris are driven further apart when she reveals she was more than just friends with Eddie; Stevie returns to patch things up with Shannon; A.J. teaches Wayne how to live a little; Travis gets into some big trouble and Mark attempts to help him.
