Brenda, Kelly, Donna, Andrea and David go to Magic Mountain for Senior Ditch Day (an event organized by the school). A classmate steals Kelly's wallet, but Donna beats him up when he tries to snatch her purse. Andrea struggles to overcome her fear of roller coasters, and she and Donna have a talk about being virgins. Brandon misses out on the trip to fill in for an ailing Nat at the Peach Pit.