Ben has been an underdog his whole life. But when he meets Merlin—the Merlin—the wizard delivers devastating news: a vicious band of aliens are approaching, and Ben could be the champion Earth desperately needs.

Soon Ben joins the Round Table Reboot, where legendary heroes are training a new generation to battle the deadly threat. They have a secret weapon: X-Calibur. But this time X-Calibur is not a sword -- it's a spaceship -- and only the right kid can awaken its powers. All Ben has ever wanted is to be a hero...but is it in the stars for him?