An alien emperor plans to destroy the Earth for kidnapping his daughter. During their search, Ben uses the untested Alien X form to fix a broken dam. Though the task proves simple thanks to Alien X's reality-warping abilities, Ben finds himself locked in debate with the other two personalities inside the alien, unable to move or transform back without their consent. In the meantime, Kevin and Gwen have to protect Ben while keeping the emperor from destroying the Earth. Ben, tired of the fruitless debate, demands to be transformed into another alien which can actually get the job done. He manages to save the Earth, but resolves never to use Alien X again.