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.
Not streaming on a subscription service in the US right now.
Starring Troy Baker, Eric Bauza, Darren Criss, Kyle Mooney, Baron Vaughn, Carlos Alazraqui, Cas Anvar, Rachel Bloom, John DiMaggio, Keith Ferguson