 An eight-year-old boy named Keven McCallister was accidentally left behind when his family rushes off on a Christmas vacation to France. Meanwhile, two bumbling pair of burglars named Harry and Marv known as the "Wet Bandits," are trying to break in to steal all sorts of valuables. Tonight Keven has become a home security system while he is rigging a bewildering battery of booby traps. It s all up to Kevin to save the house and set out booby traps before Harry and Marv steals everything in the house!