David's late night radio show leads him to start taking caffeine pills, and the mess he makes around the apartment upsets Kelly and Donna. Brenda goes on a blind date with Stuart Carson, the son of one of her father's clients and it turns out to be an unexpected success. Meanwhile, Kelly cools her relationship with Dylan, and Andrea's relationship with Dan takes a surprising turn.

The Walshes are celebrating their 20th anniversary, and before the evening is over one Walsh twin's life will change forever. Stuart has a surprising suggestion for Brenda, and Brandon startles a gun-wielding Dylan. Meanwhile, Andrea meets a young bartender, named Jesse Vasquez, at the anniversary party. Brandon falls for an anthropologist grad student named Lucinda Nicholson whom he meets at a local gym. David's father, Mel, asks David to look after baby Erin while he takes off somewhere which angers Jackie when she finds out.