Santa Claus (Douglas Seale) is looking for his successor, and hapless taxi driver Ernest P. Worrell (Jim Varney) is just the man to help him out. Traveling to Florida to pass his mantle on to children's show host Joe Carruthers (Oliver Clark), Santa gets into unexpected trouble, and it's up to Ernest, along with a teen girl named Harmony (Noelle Parker), to assist Saint Nick with his important mission, or the future of Christmas could be in jeopardy.