in london, monica (helen chandler) and her boyfriend harry attend a scavenger hunt party given by monica's aunt, carrie. when nearly everyone wins, carrie announces a new challenge: women must find a man who has been married over 5 years who is still faithful and men must find a woman over 20 who has never had a love affair. though harry has been married over 5 years and monica is 21 neither fits the other requirement.