At the North Pole, Mrs. Claus' contributions seem to go unappreciated as Santa busily prepares for the biggest night of the year. She takes the sleigh to check out a new route, and when one of the reindeer is injured, she must make an emergency landing in New York City. Back at the North Pole, Santa is lost without her -- even his trusty elf cannot fill her shoes. With Christmas around the corner, they desperately want her back, and they really need the sleigh.