Ben For Ultimate Aliens

Ben's secret identity is revealed to the entire world, and he is now a superhero loved everywhere by kids and teenagers, but distrusted by many adults. Kevin and Gwen find out who revealed Ben's secret and where he lives, and the three go to "pay him a visit". The unknown alien steals a nuclear device from a prototype interstellar rocket. They follow the alien to his ship, which he intends to launch using the nuke, which would destroy central Florida.

The Omnitrix has been destroyed, and Ben must learn to master the incredible and incomprehensible secrets of the new Ultimatrix, a gauntlet-like version of the old Omnitrix that not only gives him access to all of his original alien abilities, but also allows him to evolve his alien forms into far much stronger and more powerful versions; called "ultimate forms."

Ben becomes an overnight celebrity, hailed by kids as a hero but distrusted by most adults as a possible threat. With Gwen, Kevin, Julie, and Grandpa Max still at his side, Ben continues to battle alien threats to the galaxy, including finding five aliens that were attacked and kidnapped by an Osmosian villain named Aggregor. Their names were Bivalvan, Galapegus, P'andor, Andreas, and Ra'ad. After Aggregor captured and fused with all five aliens, he began searching for the Map of Infinity to go to the Forge of Creation and absorb the vast God/cosmic-like powers of Celestialsapiens.

Kevin is forced to absorb energy from the Ultimatrix and goes insane with tremendous energy and power, but is shown that he does still have a good human heart, and still does care, and that he has not gone completely evil.

After the defeat of Vilgax who absorbed the enormous abilities and powers of Diagon to become even stronger and more powerful, Azmuth appears to ask Ben to give his sword, Ascalon, and the Ultimatrix back, giving Ben the new-and-improved and greatly modified version of the Omnitrix.

Meanwhile, with Gwen and Kevin, Gwen argues with Kevin about how to get Ben back. Kevin figures out that Ben is inside the Ultimatrix. Gwen thinks that they should go in after Ben, but Kevin thinks that they would be trapped in forever. He decides that she can take the risk if she wants to, but she has to be careful.

[Characters]
- Ben Tennyson
- Gwen Tennyson
- Kevin Levin