While out on a job, Chase, Marshall, Rocky, and Zuma find two blue katanas, two red sai, a green bo-staff, and two orange nunchucks. When they touch the weapons, something remarkable happens: the four become humanized! They decide to practice ninjitsu, dubbing themselves as the Teenage Mutant Ninja Dogs! But things start to go downhill when the evil Shredder and the notorious Foot Clan threatens to destroy all of Adventure City with Humdinger and scientist Baxter Stockman by his side. Even worse, he hires two mutant allies: Bebop, a funky warthog, and Rocksteady, an immensely strong rhinoceros. Can the Teenage Mutant Ninja Dogs stop Shredder and the Foot Clan before it's too late?
