Ben's strange behavior raises suspicion in Gwen and Kevin, but when they catch him sneaking around Plumbers' headquarters, Gwen and Kevin learn that Ben has been replaced by Alfredo, Ben's evil alter ego, and must find a way to rescue their friend.
Fifteen-year-old Ben Tennyson gathers his friends Gwen and Kevin, straps on his Omnitrix, which allows him to change into different aliens, and sets off in search of his missing grandfather Max, meeting friends and foes along the way.
Sonic and his friends attempt to track down a Chaos Emerald on the planet Breezy and find that it is being guarded by the indestructible Crystal Metarex.
