Santa Claus is Comin’ to Town (1970)

Santa Claus is Comin’ to Town explores Santa’s childhood and youth, explaining where the reindeer came from and how Santa started making toys. The Burgermeister Meisterburger, the mayor of Somberville, is too mean to allow the Kringles to deliver toys to the children of the town.
The young Kris Kringle decides to take it upon himself to deliver the toys but encounters an evil wizard named Winter who lives between the Kringles and the town.
Overcoming all obstacles, Kris manages to melt Winter’s heart and alongside the town schoolteacher, bring Christmas back into the hearts of the townspeople.
Where to stream: Peacock, Amazon Prime Video