Ben is up to some serious monkey business when he pulls a fast one on the prince of the Arachnachimps. Just as he cleans up that mess, the action explodes into an all-out War of the Worlds! Ben sets a Highbreed attack into motion and is forced to confront the Supreme Highbreed on his own turf. But when the Omnitrix Master Control resets, Ben is left with a big surprise on his hands!