Upon returning from a buying trip abroad for the department store he works at, a divorced executive named Marshall finds he is in possession of a strange ornamental skull. He is looking after his 11-year-old son, Charlie, for a few days. The skull has special powers, and when Marshall and Charlie simultaneously wish they were each other's age, they switch bodies. Now Charlie has to go to work, and Marshall has go to school. Charlie also has to deal with Marshall's girlfriend, Sam. If that wasn't enough a pair of smugglers are in pursuit of the skull.