Ben 10: Alien Force (2008)

Episode Overview

Kevin is starting to feel despair over the possibility of ever becoming human again. However, he encounters a girl who accepts him as he is. Enchanted by her, Kevin unwittingly falls under Charmcaster's influence, who has returned seeking vengeance on Ben and Gwen. Under her control, Kevin is compelled to follow her orders and turn against his friends, forcing him to confront his inner struggle between loyalty and the dark magic that binds him.