Ben 10 Ultimate Alien: is the sequel to the hit Cartoon Network series, Ben 10. The series takes place five years after the original. Ben no longer wears the Omnitrix, and his cousin, Gwen, has honed her skills in magic. When an alien invasion of the DNALIENS strikes Earth and Grandpa Max goes missing, Ben decides that its hero time once again. Hes not alone, as he is joined by Gwen and his old archenemy, Kevin Levin. Now its time once again for Ben to begin his quest to find his grandfather and stop the invasion from the evil DNALIENS.