Pop icon Sabrina Carpenter jingles all the bells in her first-ever variety music special full of holiday hits, unexpected duets and comedic cameos.

Batman, Batgirl, and Robin forge an alliance with the Teenage Mutant Ninja Turtles to fight against the Turtles' sworn enemy, The Shredder, who has apparently teamed up with Ra's Al Ghul and The League of Assassins.