Trying to follow up something as funny as the original AMERICAN PIE is a huge task, but I think they did a pretty good job. It's not better than the original, but there's some very funny parts, the character development feels natural and best of all Nadia is back!
All of the main characters are have returned and they're finishing up their first year of college. They rent a summer house on the lake to party and take up a house painting gig to help pay the rent. Jim finds out the Nadia is coming at the end of summer to do some screwin. Nervous that he might be bad in bed he asks the only woman he's ever been with (Willow) to train him on how to be an awesome lover. That's the main story, but of course Stifler gets into all kinds of sexual adventures, Jim gets into sexual misadventures and Finch gets into Stifler's mom.
There's nothing life-changing going on. Just a fun film with some enjoyable characters, which is more than I can say about the boring Part 3.
Part 1 - American Pie
Part 3 - American Wedding
Part 4 - American Reunion