When bratty 8-year-old Kevin McCallister acts out the night before a family trip to Paris, his mother makes him sleep in the attic. After the McCallisters mistakenly leave for the airport without Kevin, he awakens to an empty house and assumes his wish to have no family has come true. But his excitement sours when he realizes that two con men plan to rob the McCallister residence and that he alone must protect the family home.