While spending the day in the Robinson household, Wilbur's best friend joins in the search for Grandfather Robinson's missing false teeth and meets one wacky relative after another.
Irrepressible, twelve-year-old Alex is convinced that he will be a star and impress his schoolmates when, as the winner of a cat food essay contest, he is asked to make a commercial for national television.
Greg, stuck indoors with his family over the holiday because of a blizzard, suffers from claustrophobia and worries they will not be able to weather the storm.