The McCallister family is preparing to spend Christmas in Paris, gathering at Peter and Kate's home in a Chicago suburb on the night before their departure. Peter and Kate's youngest son, Kevin, is the subject of ridicule by his older siblings and cousins. Kevin inadvertently ruins the family dinner after a brief scuffle against his oldest brother Buzz, resulting in Kate sending him up to the attic. Kevin berates his mother for allowing the rest of the family to pick on him and wishes that his family would disappear. During the night, heavy winds create a power outage, disabling the alarm clocks and causing the family to oversleep. In the confusion and rush to get to the airport, Kevin is accidentally left behind.