Over the river and through the woods to the festive all-family adventure! Julie and Sarah Thompson are heading for the Grandma's house, even though they don't have her address - or even permission to cross the street without a grown up! Mary Kate Olsen and Ashley Olsen play the Thompsons in the charming Christmas odyssey, The girls stow away in a delivery truck driven by Eddie (J, Eddie Peck), a kindly man who patterns his life after Roy Rogers. The girls think that they're giving their overworked single mom (Cynthia Geary) a vacation from the stress of parenting, Instead they spark a madcap romp, including two light-hearted crooks (Rhea Perlman and Jerry Van Dyke) who claim to be Santa's elves, a ransom demand, a mother's love, a million dollar lottery ticket, pursuing cops, a would-be Santa and his reindeer and Roy Rogers-like heroics.