There's a time to go hero, and there's a time to go ultimate!
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Vilgax re-emerges in his most powerful form ever! Can Ben stop him and save the universe?
Dagon is getting closer and closer to entering our dimension thanks to an old foe.
The final battle between the Forever Knights and Dagon's Esoterica is in full swing, with Ben caught in the middle!
Albedo attempts to get the ultimatrix by invading Ben's mind.
Dr. Animo is unexpectedly paroled from prison and starts up a company selling eggs, which in fact contain mutant dinosaurs which he wishes to distribute around the world.
Movie starlet Jennifer Nocturne is recaptured by the evil Captain Nemesis!
After Darkstar opens the Door to Anywhere, Charmcaster comes through, and the two team up to give Ben, Gwen, and Kevin the fight of a lifetime.
Gwen and co revisit Legerdomain in hopes of rescuing Charmcaster.
A Techadon weapon master comes to Earth and wants the Ultimatrix.
Azmuth reveals the origin of the sword and how he first encountered Old George. Ben comes to a decision on how to handle the Daigon.
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.
Ma Vreedle goes to Earth to expand her family by creating clones and using all the water on Earth.
Colonel Rozum asks the team to investigate an island of garbage where people have been disappearing.
Ben's Ultimate transformations have developed their own personalities. Now they want their freedom from Ben.
Julie suddenly leaves a tennis tournament and spends all her time with Ben.
Ben finds out there's a new show called 'Ben 10: Live." He finds an old enemy running the show and cashing in on his fame.
Julie gets Ben to visit a charity organization who wants to improve the world with alien technology. Ben soon discovers the charity's benefactor is an old enemy.
Ben faces Tecadon killer robots that have been programmed to kill him. Each robot is more powerful than the last one. Ben's only chance to survive is for Gwen to find out who commissioned the robots.
Simian asks the team for help when a DNAlien takes over his home world.
Old George, the original Forever Knight, reclaims his position, and orders the Knights to remove all aliens on Earth.
After a base is attacked, Max is infuriated when they learn it was a secret alien prison facility. While Max argues with the officer in charge, the team tries to locate an escaped prisoner.
Grandpa Max tells the team about his first UFO encounter, which led him to meet Verdona.
Following a visit from Paradox after a fight with Eon, Ben 10,000 arrives 20 years from the future to seek the aid of his past counterpart in tracking down Eon.
Gwen has always been a multi-tasker, trying to juggle school, hobbies, friends and her work as a hero, waking up early and going to sleep late. But Gwen's already packed day is about to get worse when Dr. Animo attacks with an army of giant frogs and Gwen is forced to make a hard choice.
Ben, Gwen, and Kevin are summoned to a Plumbers' Academy to go under training that is supervised by Magister Hulka.
The Forever Knights unleash an evil force mistaken for an ancient weapon.
Victor Validus resurfaces and attacks Ben at night. Elena Validus and the nanochips return.
Gwen is excited by the prospect of her cousin Sunny paying the team a visit while dealing with the Robots of Dimension 12. But her excitement quickly turns into trepidation when it is uncovered that her cousin is not all that she appears and has some particularly sinister intentions.
Jimmy Jones is looking for the biggest new story he and Ben can tackle, but thats when he stumbles upon a strange pink tentacled creature which crashed from the sky into a near by cave.
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.
Ben, Julie and the rest of the heroic crew embark on a dangerous journey that could cost them all their lives in an effort to achieve the safe return of Ship and his former owner Baz-L.
A mysterious alien girl named Eunice has no memory and is being hunted by Sunder. While evading Sunder, Ben soon discovers that Eunice has nature-based abilities.
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Final confrontation with Kevin. While Gwen makes a last ditch effort to save Kevin, Ben fights an all out battle with Kevin.
Kevin starts going after Plumbers kids to gain more power. Ben and Gwen continue to argue about how to handle the situation. Gwen tries to find someone who will help her cure Kevin.
Argit asks Ben and Gwen for protection from Kevin, so they take him to the nearest Plumbers Academy, but that won't stop Kevin.
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.
As the team makes its final attempt to stop Aggregor, they find an unexpected ally, and one person will make a fateful decision with lasting repercussions.
With the fourth piece of the Map of Infinity almost in Aggregor's clutches, the gang chase him through the artificial planetoid known as Perplexahedron.
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.
Aggregor is after the next piece of the map on a watery planet.
Cash and JT convince the team to allow them to take credit for the team's actions so they can earn money for Cash's mother's operation.
Aggregor has absorbed all the powers of his captured aliens. Now he's after the Map of Infinity.
Aggregor has all five aliens. The Plumbers manage to disable Aggregor's ship, forcing Aggregor to find a new way to absorb their powers. The team makes a last ditch effort to save the alien prisoners.
Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.
Ra'ad, the last of Aggregor's escaped prisoners, attacks Ben and informs the team of the true fate of his comrades. He finds a safe hiding place but one that endangers Ben in the process.
Then team encounters another of Aggregor's escaped prisoners, Andreas, whom Argit is using as part of a scheme against the Forever Knights.
P'Andor, escaped from Aggregor, now wants help to escape his encapsulating suit, but Kevin's the first to perceive that that's a fatally bad idea.
The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.
Ben gets an offer to star in his own video game, but the designer's real motives are part of a plan to destroy Ben.
After Jimmy Jones reveals Ben's identity, some of his enemies (such as Zombozo, Rojo, Charmcaster, Vulkanus, and Sevenseven) team up to try to attack his family. Now Ben and his friends have to protect them no matter what.
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.
Ben's secret is out. As Ben deals with his newfound fame, a new threat emerges as a thief steals parts of a new advanced spaceship from NASA.
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