The whole gang are back and as close as ever. They decide to get even closer by spending the summer together at a beach house. They decide to hold the biggest party ever to be seen, even if the preparation doesn't always go to plan. Especially when Stifler, Finch and Jim become more close to each other than they ever want to be and when Jim mistakes super glue for lubricant...
A coming-of-age romantic comedy set against the backdrop of the Cape Cod Baseball League. Local boy Ryan Dunne (Freddie Prinze Jr.), now a pitcher for Boston College, meets Tenley Parrish (Jessica Biel), the daughter of a wealthy couple who summer on the Cape. Ryan and Tenley fall in love, much to the chagrin of their families, while Ryan clings to one last hope of being discovered and signed to a pro baseball contract.
It's vacation time for Carter as he finds himself alongside Lee in Hong Kong wishing for more excitement. While Carter wants to party and meet the ladies, Lee is out to track down a Triad gang lord who may be responsible for killing two men at the American Embassy. Things get complicated as the pair stumble onto a counterfeiting plot. The boys are soon up to their necks in fist fights and life-threatening situations. A trip back to the U.S. may provide the answers about the bombing, the counterfeiting, and the true allegiance of sexy customs agent Isabella.
Melanie Ballard (Natasha Henstridge) is a hard nosed police chief in the year 2025. She and a police snatch squad are sent to Mars to apprehend a dangerous criminal James Williams (Ice Cube). Mars has been occupied by humans for some time and they have set up mining facilities. The mining activities on Mars have unleashed the spirits of alien beings who gradually possess the bodies of the workers. It soon turns out that catching the dangerous fugitive takes a back seat as the alien spirits begin to rid their planet of the 'invaders'.