The half-shell heroes go full throttle on their final missions! First they battle their way through a mutant wasteland. Then, the Turtles travel to an alternate dimension inhabited by animal warriors and ally themselves with the great rabbit samurai Usagi Yojimbo in order to defeat an evil sorcerer. And when Savanti Romero threatens to take over New York with his monstrous army, they gear up to clash with some classic movie monsters.