Full of the Christmas spirit, Harold steps up to lead Santa’s sleigh as the “opposite reindeer,” filling in at the last minute with a jetpack, a blinking red nose, and all the support from his friends. Oppie the Opposite Elf scrambles to get him trained, while Melodybee and Roger’s friendly rivalry adds some playful chaos as Harold prepares for his big night. With confidence and courage, Harold takes off into the Christmas Eve sky, proving that even without antlers, he's ready to guide the sleigh through the most magical night of the year.