He might look monstrous, but the robotic Frankenstein Jr. is really a force for justice-at least, usually. But when the towering, super-powered android suddenly goes bad and terrorizes the city, it's up to Scooby and the gang to figure out why. Yet, even if they solve the mystery, how can they stop the giant robot's rampage? There's only one possible chance: with some super-powered help from the Impossibles!