Gus is a pretty clever cat burglar, but he's having a really bad Christmas Eve. He just stole precious gems from a wealthy amusement park owner. But his plan to escape has gone awry. So he ducks into Lloyd and Caroline's house only to find himself caught in the middle of a marriage from hell. Lloyd and Caroline are possibly the most dysfunctional pair in the world. To make matters worse, the unhappy twosome are expecting their in-laws for dinner. Once the guests arrive, Gus -- who has already taken their son hostage -- makes Lloyd and Caroline agree to pretend he's their marriage counselor.