At a high-school party, four friends find that losing their collective virginity isn't as easy as they had thought. But they still believe that they need to do so before college. To motivate themselves, they enter a pact to all "score" by their senior prom.
With high school a distant memory, Jim and Michelle are getting married — and in a hurry, since Jim's grandmother is sick and wants to see him walk down the aisle — prompting Stifler to throw the ultimate bachelor party. And Jim's dad is reliable as ever, doling out advice no one wants to hear.
On one random day in the San Fernando Valley, a dying father, a young wife, a male caretaker, a famous lost son, a police officer in love, a boy genius, an ex-boy genius, a game show host and an estranged daughter will each become part of a dazzling multiplicity of plots, but one story.
