Set in Alb’s tribute to Saturday Morning Cartoons, especially Teenage Mutant Ninja Turtles. It is a world of mutant animals, robots, cyborgs, aliens, conspiracies, secrets, and even magic. Caravaggio, the Big Apple Sewer Samurai’s leader has mysteriously vanished and so the rest of the team must rescue him. Meanwhile, the mutant turtle ninja must battle in a gladiator game for the amusement of aliens. Can the heroes save Caravaggio? Who will be Earth’s Champion?