Five years after his fight against Vilgax, Ben, who has grown up, wants to unlock all the powers inside the Omnitrix. Gwen doesn´t want to help him so he asks his best friend, Kevin Levin, to help him. An accident happens, making some of the alien DNA get stuck into Kevin, making him a monster. Now Kevin, under the belief that Ben ruined his life, wants to take revenge, so he partners up with Vilgax to take him down.
