Heretofore, children have always imagined "Mrs. Claus" baking cookies or knitting sweaters. They had no idea "Mrs. Claus" had a name of her own. Her real name is "Santa Christina." Now they learn she is an active outdoor sportswoman. She mushes about the North Pole with seven sled dogs. After she proves her dogs can run as fast as reindeer, Santa Christina agrees to help Santa Claus deliver Christmas toys. Delivering half the toys should make Santa Christina equally famous with her husband, Santa Claus.