After a fight with his older brother, Buzz, over Little Nero's pizza, in front of the rest of the family results in him being sent up to the third floor for the night, Kevin McCallister wishes that his family would simply disappear. After a power line failure which neutralizes all the alarm clocks, the rest of the family rushes to leave to go on a Christmas vacation to Paris, France. During the confusion, Kevin is accidentally left at home by himself and experiences what it is like to be independent for the first time, but two intruders, Harry and Marv, plot to break-into his house. But Kevin sets up traps out of household items. The intruders are caught, and Kevin is reunited by his family who came back.