Watch The Key to Christmas (2020) HD Full Movie Free on solarmovie.do. Watch The Key to Christmas (2020) online free. When a disgruntled elf takes over the North Pole, she turns time backwards and Santa Claus begins ge...When a disgruntled elf takes over the North Pole, she turns time backwards and Santa Claus begins getting younger fast. It's up to a loyal elf, a little girl with a magic key, and the now-teenage Santa to save the future of Christmas.