Enter the Dragons (2) (S05E12)

Joined by both trusted friends and formidable foes, the Turtles have battled through a nightmarish, demon-infested New York to face the Shredder for the final showdown! To overcome this ultimate challenge, the Turtles must tap into their full potential and transform into their mystical forms...Dragons. As the night unfolds, the Teenage Mutant Ninja Turtles will confront their fates: a fight for survival or a plunge into oblivion!