The Vengeance of Vilgax, Pt. 2

S3 E2: Vilgax has beaten the heroes of 10 planets and taken their powers as his own. He has now returned to Earth and issued a conquerer's challenge to Ben where the victor claims dominion over the Earth. In trying to beef up the Omnitrix for his battle, Ben overloads the watch, loses four of his transformations, and turns Kevin into a monster. Now, Ben must return the lost transformations to the Omnitrix before his fight with Vilgax or he won't have total control of the watch with the fate of the world in his hands.