It's high school graduation and, like all seniors, they want to party. So, 500 high school seniors look forward to a party while, in the meantime, a boy wants to get a girl he's loved for years who just broke up with her boyfriend, and one head-case who wants revenge on a lifelong bully. So, the party comes, things develop. People have sex, drink, and go along with most of the guidelines of a high school graduation party.