Michael, a college student, visits his girlfriend Gabriella and her family for Christmas in Canada. When he gets there, she tells him that she doesn't love him any more. Michael attempts to see what is happening. Meanwhile, her family is exceedingly strange: her father is an atheist writer who spends most of his time wandering the house nude. Her mother is a devout Catholic who bears eccentricities of her own. The sisters along with Michael visit their grandmother at a mental institution, where...

Kate (Brittany Snow) is the new girl in school. She catches John Tucker (Jesse Metcalfe) dating three different girls at once: Carrie - the smart girl, Heather - the cheerleader, and Beth - the activist slut; none of them are aware that they are not the only girl in John's heart. Kate, having been raised by a single mother, has seen the pain caused by playboys like John Tucker, and she won't stand idly by. Together with the three jilted ex-girlfriends, they hatch a plan to teach John a lesson....