Jay (Jason Segel) and Annie (Cameron Diaz) are a married couple still very much in love, but ten years and two kids have cooled the passion. To get it back, they decide- why not?- to make a video of themselves trying out every position in THE JOY OF SEX in one marathon three-hour session. It seems like a great idea, until they discover that their most private video has gone public. In a panic, they begin a wild night of adventure- tracking down leads, roping in friends, duping Annie's boss-all to reclaim their video, their reputation, their sanity, and most importantly, their marriage