Kevin returns home and rigs the house with booby traps to take on the burglars. Harry and Marv break in, spring the traps, and suffer various injuries. While the duo pursues Kevin around the house, he calls the police and flees, then lures Harry and Marv into a neighboring home which they previously broke into. They ambush him and prepare to get their revenge, but Marley intervenes and knocks them unconscious with his snow shovel. The police arrive and arrest Harry and Marv, having identified all the houses that they broke into due to Marv's destructive characteristic of flooding them.