Ben's white-haired doppelganger Albedo returns and seeks to profit from Ben's fame by creating a play based on aliens from the Ultimatrix. Albedos antics aren't the only thing causing concern: Julie surprises everyone by joining a fanatical group that worships Vilgax. Bens old enemy Dagon also closes in on Ben, followed by Vilgax in his most powerful form yet. Can Ben stop them both and avoid the ultimate ending?