Brenda organiza una fiesta de pijamas e invita a Kelly, Donna y Andrea para pasar la noche. Pero la velada se vuelve amarga cuando la venenosa novia de Kelly, Amanda Pacer, se une a la fiesta y comienza un juego que revela secretos que amenazan las amistades entre todas ellas. Mientras tanto, Brandon y Steve salen juntos para una noche de paseo y fiesta en la que terminan siendo engañados por dos chicas que roban el auto de Steve.

With 24 hours until graduation, Andrea frets with Brandon over her coming valedictorian speech and her college choice of California University or Yale, as does Brenda with Minnesota. Meanwhile, Dylan gets a windfall when he inherits his trust fund worth $10 million, as well as another surprise visit from his eccentric mother Iris, while he reconsiders his college choice of Berkley or California University. On graduation day, David and Donna are the MCs at the Senior Breakfast gathering while Steve meets with the gang to create something to remember them by.

Andrea Zuckerman arrives in town for a visit as the gang prepares to go to their five-year high school reunion at West Beverly High. She reveals her troubled life and failed marriage to Brandon. Meanwhile, Donna becomes jealous about a Rolling Stones magazine article detailing Noah's single status, which prompts her to sneak away from the dance to the Peach Pit After Dark to see if Noah will be true to her. Valerie creates a new persona for herself and David in order to fit in at the reunion. Steve's macho image takes over when an old girlfriend, Rhonda, drives him away from his date, Janet, and leads him into a prank. Elsewhere, Kelly also deals with a former boyfriend, Ross Webber, who is attending the reunion.