Ben is supposed to attend a tournament to support his girlfriend, but the Forever Knights are trying to break into a museum. Ben tries to use the Ultimatrix to handle all his obligations.

The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.

Aggregor escapes to a magical dimension. Gwen asks for Charmcaster's help to pursue him. The team learns about Charmcaster's past and why she's willing to help them now.

Kevin's out for payback on anyone who has ever crossed him. His next stop is a prison in the Null Void. Ben and Gwen try to stop him, where Ben comes to a grim decision.

The King of Zarkovia asks the team for help with a civil war. The team agrees to help when they find out Dr. Viktor may be involved.

Victor Validus resurfaces and attacks Ben at night. Elena Validus and the nanochips return.

Ben, Gwen, and Kevin are summoned to a Plumbers' Academy to go under training that is supervised by Magister Hulka.

Grandpa Max tells the team about his first UFO encounter, which led him to meet Verdona.

Old George, the original Forever Knight, reclaims his position, and orders the Knights to remove all aliens on Earth.

Ben's Ultimate transformations have developed their own personalities. Now they want their freedom from Ben.

The Flame Keepers realize their mistake too late. Vilgax wants the power of Daigon. The Forever Knights are out to destroy Daigon. Ben and the team try to sort things out.

A Techadon weapon master comes to Earth and wants the Ultimatrix.

Movie starlet Jennifer Nocturne is recaptured by the evil Captain Nemesis!

The final battle between the Forever Knights and Dagon's Esoterica is in full swing, with Ben caught in the middle!