Social positions at Kennedy High shift at the beginning of the gang's junior year; Lily and Sugar Daddy campaign to prevent the removal of the school's Forever Tree.
The students learn about parenthood by taking care of computerized dolls; Nicole and Mary Cherry plan to rule the school after Brooke leaves for San Francisco.
Sam helps her mother sort out the derailed marriage; Brooke lands in jail; Ms. Glass enlists Nicole's help when a rich relative visits.
Josh (Bryce Johnson) is dismayed when his newly divorced mother (guest star Dey Young) teams up with his football coach (guest star Eric Mabius); Nicole (Tammy Lynn Michaels) tries to get back on the cheerleading squad. With Carly Pope and Leslie Bibb.
Nicole (Tammy Lynn Michaels) creates some explosive new couples, pairing off Harrison with Mary Cherry (Christopher Gorham, Leslie Grossman), while forcing Brooke (Leslie Bibb) to come between Sam and boyfriend George (Carly Pope, guest star A.T. Montgomery).
Sam and Carmen are in the running for homecoming queen; Brooke opts to run against Harrison as student council president.
Josh tests positive for drug use during Brooke's anti-drug crusade; Carmen seizes the spotlight when Sam drops out of the race for homecoming queen.
Brooke and Sugar Daddy check into a clinic for eating disorders; Harrison shares a room with a religious fanatic as he begins treatment for leukemia.
Harrison (Christopher Gorham) meets God (guest star Ann-Margret); Carmen (Sara Rue) bumps into Nicole (Tammy Lynn Michaels) at a meeting for teens with alcoholic families; Lily and Josh (Tamara Mello, Bryce Johnson) struggle with their revealing roles in the school play.
Combating leukemia and depressed during the holidays, Harrison wishes he was never born and even contemplates suicide.
Sam and Harrison are eager to lose their virginity; Bobbi Glass casts her students as sexually transmitted diseases in a play about "going all the way.".
Harrison suffers an identity crisis and turns into a power-mad playboy; Nicole has an identity crisis when she discovers that she's adopted.
Brooke begins a romance with Harrison; when Mary Cherry's family goes bankrupt, she takes a job in the cafeteria.
The news of April Tuna's tragic car accident hits Harrison hard; Josh gets a mullet; Nicole suspects that the lunch lady is her birth mother.
When the girls decide to go to a fraternity party in search of sophisticated college men, only Brooke and Carmen actually make it to the party.
Lily starts a gay and lesbian club to stamp out homophobia at Kennedy High, but her brave efforts are rewarded with a trip to the hospital.
Nicole stages a coup to overthrow the Glamazons and seize power; Brooke and Sam chafe under a dictatorship at home after one of them stays out all night.
Josh (Bryce Johnson) is anxious to prove himself on an academic game show hosted by Ed McMahon (guest starring as himself); Carmen (Sara Rue) swings with her sexy dance teacher (guest star Mario Lopez) instead of studying for the SATs. Delta Burke also guest stars.
A killer stalks the students of Kennedy High, persecuting them because of something that happened over spring break.
Sam and Brooke unite to play with Harrison's emotions; Josh considers options that will keep him in town.
Brooke and Sam plan so that each will dance with Harrison at the prom; Mary Cherry meets her drag-queen father (RuPaul Charles) for the first time.