Dylan gets Suzanne a job at the Peach Pit as a waitress, which takes a different turn when Nat is hospitalized after a heart attack. Dylan then learns that Nat may lose the Peach Pit when Nat's cousin Joey arrives in town wanting to sell it. Meanwhile, Brandon is asked to be a candidate for a college task-force on education to go to Washington. David seeks treatment for his drug use while trying to find a substitute for his radio shift and finds Steve, who does a bad job. Meanwhile, Andrea's not sure she can tell Jesse about her pregnancy, and Cindy becomes involved in university life as a courtship instructor.

With Nat still in the hospital awaiting heart surgery, Brandon temporarily takes over running the Peach Pit, while Dylan rescues the place after he buys out Joey's share, making Dylan the co-owner. Meanwhile, David's drug problem returns, resulting in Kelly and Donna moving out and David losing his radio DJ job when Howard the station manager sees that he's completely out of control and fires him. Jesse objects to Andrea's decision to get an abortion. Brandon learns of Lucinda's divorce from Professor Randall and wants a relationship with her.

Brandon uses Kelly as his date at a university social event to shield his affair with Lucinda from Josh Richland, a snooping student reporter from the Condor determined to dig up any dirt on Brandon. Meanwhile, Brenda and Stewart travel to Palm Springs where they find big complications from a small mistake Brenda makes which leaves them stranded in the desert, where Stuart fumes over and it resulting in her finally breaking off their engagement for good. David rents a piano as a new hobby while Kelly moves back in with him and Donna. Also, Andrea lets Steve use her dorm room after he can't stand living at the KEG house.

Lucinda temporally loses interest in Brandon when she flirts with Dylan to ask him to finance her documentary film. Meanwhile, Kelly and Brandon spend the weekend together at a task force retreat where they meet the university Chancellor, Milton Arnold, Dean Trimble and the Chancellor's teenage daughter Clare, where Brandon and Kelly become more attracted to each other and brush off Josh who's still hounding them. Brenda and Donna befriend a stray dog that escapes from the university's lab, whom they name Rocky. Also, Andrea discovers that Steve is allowing Muntz and his frat buddies to use her dorm room for nooners. Andrea protests, but changes her mind when Steve begins to date her dorm resident advisor, Kathy Fisher.

In the two-part season finale, Brandon goes to Washington D.C. as a part of the college task force to meet the president. Kelly follows Brandon to Washington to get him out of a jam when Clare and Lucinda arrive at the hotel to pursue him. At the CU Mardi Gras, David impresses pop star Kenneth "Babyface" Edmunds, and his recording manager Ariel with his keyboard music and Donna catches David in a very compromising position with Ariel. Steve runs into Celeste who's now with John Sears. Kevin and Suzanne get married in a semi-formal ceremony where he persuades Dylan to cut out any outside investment in their business offer. Jim becomes angry at Dylan for making such a rash move and Dylan fires Jim as his financial holder. Dylan then goes to a bank and gives Kevin full power-of-attorney control over his money, unaware that Kevin and Suzanne have had a hidden agenda for Dylan's inheritance all this time. After her major success in the CU play, Brenda gets a scholarship offer to study acting in London and she pays a visit to Dylan's place before leaving. Also, Andrea and Jesse experience the joys and fears of parenthood after their daughter is born.