Jay (Jason Segel) and Annie (Cameron Diaz) are still in love with a married but ten years of living and two children slightly cooled joining their passion. To get it back, they decide - and why not? - To record a video on which, during the three-hour session, proving each item of guidance JOY OF SEX. The idea seems to be great, to the point where they find out that their most private of possible video was made public. In a panic, begin frantic search for the source of the leak - follow every clue, ask for help from friends, cheat boss Annie - and all this in order to recover the video, reputation, sanity, and most importantly, your marriage.