Five years have past since Ben Tennyson has put on the Omnitrix – the alien watch that helps him transform into aliens and fight crime. Today, he is a regular and well adjusted, 15 years old, happy with school, friends and soccer. But as fate would have it, Ben is once again forced to turn to the Omnitrix to rescue Grandpa Max from a new enemy - the Highbreed and their DNAlien servants, who are joined by the Forever Knights. Ben decides to once again don the Omnitrix and he quickly learns that he can now transform into ten new Aliens. Ben is joined by his cousin Gwen and the bad-turned-good Kevin to fight the Evil.