Jim asks Michelle to marry him, she says yes. They don't invite Stifler. However he can teach Jim to dance so Jim reluctantly invites him. Stifler and Finch rival over Michelle's sister. Jim has to meet Michelle's parents. Jim's friends set up a bachelor party but Jim invited Michelle's parents round for dinner. They have to cover up the 'visitors'. Stifler almost ruins the wedding by killing the flowers. Eventually the wedding takes place.