When Marshall (Judge Reinhold) and his son, Charlie (Fred Savage), touch an ancient skull, they are shocked to discover that their bodies have switched! Now, Marshall, a department store executive, must deal with junior high school bullies, and Charlie can play in toy stores without getting kicked out. However, when Charlie's antics place Marshall's job in jeopardy, the father and son team must frantically find a way to reverse the spell... if one exists.