Strange dreams contemplate Donna to fulfill David's dream to sleep with her on their second anniversary together, until her parents show up for a surprise visit. Meanwhile, Brandon returns from San Francisco where he learns about the Steve's botch break-in, who finds himself left in cold after Mike Ryan and the rest of the frat members reject him. Only John Sears remains sympathetic to Steve and tries to help. But when Brandon learns and relays to Steve that the campus police were anonymously tipped off to Steve's break-in, Steve realizes that Sears had set him up. In the meantime, Brandon plays hardball with the corrupt Professor Randall to drop the break-in charges against Steve by threatening to go public about him rigging test scores for D'Shawn and other basketball stars to they can play basketball for the university. Elsewhere, Andrea falls deeply in love with Jesse. Also, John Sears continued wooing of Kelly only pushes her back to Dylan.

Donna tries to make up with David, whose increased drug use turns her away. David also steals $150 from his father to buy more amphetamines for himself. When his drug dealer is arrested later, he finds himself in possession of a huge stash of narcotics and calls on Dylan for help. Meanwhile, Jesse and Andrea meet with her grandmother to get her blessings before their wedding and reception at the Peach Pit. A dangerous affair begins between Brandon and Lucinda, who shows her true colors when she starts teaching her anthropology class of human sexuality and preaches the need for multiple partners, seeing sex as her personal weapon. Brenda gets a surprise visit from a long-absent Stuart on Valentine's Day.

On Halloween night, Donna becomes scared when her two suitors, Ray and Griffin, finally cross paths during a costume party at the KEG house. After being shunned by the Walshes and the rest of the gang, Valerie considers moving back to Buffalo, but decides to stay after learning that her mother has suffered a nervous breakdown. Steve unfairly blames Dylan for having a tryst with Valerie, and breaks his business agreement with the Peach Pit After Dark. Valerie also fails to bewitch Dylan who's sinking deeper into depravity with hard drugs, while Brandon reacts coldly towards Valerie after finding out that she skipped out on Steve's frat party to be with Dylan after she promised everyone to stay away from him. Meanwhile, Andrea's not pleased to see the cross necklace her baby daughter Hannah receives at a Day of the Dead celebration. Also, Clare talks David into a UFO hunt for the night in the desert near Barstow, CA.