Santa Claus: The Movie (1985)

This is the story of a master toymaker who discovers a magical kingdom of elves in the North Pole and becomes Santa Claus. But when his eager-to-please elf, Patch, leaves for the big streets of New York City, he becomes mixed up with a dastardly toy tycoon's plan to take over Christmas. And so begins his adventure to rescue Patch and to save Christmas for all the children of the world.