Instead of flying to Florida with his folks, Kevin ends up alone in New York, where he gets a hotel room with his dad's credit card—despite problems from a clerk and meddling bellboy. But when Kevin runs into his old nemeses, the Wet Bandits, he's determined to foil their plans to rob a toy store on Christmas Eve.

The Popes are a family who haven't been able to use their real identity for years. In the late sixties, the parents set a weapons lab afire in an effort to hinder the government's Vietnam war campaign. Ever since then, the Popes have been on the run with the authorities never far behind. Their survival is threatened when their eldest son falls in love with a girl, and announces his wish to live his life on his own terms.