Underwater on Piscciss, a Magister Plumber named Pyke is searching for something. He finds a swimming object, which happens to be Ultimate Aggregor, who seems to defeat Magister Pyke.

Techadon robots go after Ben on orders from Vulkanus to attain the Ultimatrix. Gwen and Kevin go across space to prevent Vulkanus from getting what he is after.

Ben and Gwen arrive in Incarceon to tell Morgg that Ultimate Kevin is going to kill him. Morgg ignores their warning and has his robots take them to a room to stay in until a supply ship picks them up. Meanwhile, while the prisoners are still mining, Ultimate Kevin flashes back to the last time […]

Following a visit from Paradox after a fight with Eon, Ben 10,000 from an alternate future arrives twenty years from the future to seek the aid of his past counterpart in tracking down Eon. It is revealed that Eon is actually an adult Ben from an alternate world, and that he wants to destroy all […]

Julie is playing her first big game, while the Forever Knights are trying to break into a museum. Ben also wants to go see the opening of a new Sumo Slammers movie. To deal with his dilemma, he transforms into Echo Echo and then changes back to human, creating three copies of himself with differing […]

One year after the events of Ben 10: Alien Swarm, Victor Validus attacks Ben at night but when he defends himself, he finds a Nanochip that was believed to have been destroyed along with its queen. Ben, Kevin and Gwen find Victor’s daughter, Elena who was once Ben’s middle school sweetheart, to see what is […]

As Ben laments that things can’t get worse, Aggregor shows up to recapture Ra’ad. The gang try to fight Aggregor, but he proves to be too strong for them. The Ultimatrix finally lets Ben transform, but unfortunately, all that he can transform into is an Amperi. With no choice, Ben transforms into AmpFibian and fights […]

Ma Vreedle plans to spawn an army of Pretty Boy Vreedle clones, which could dry up Earth’s oceans.

The team goes to Gwen’s house to find a solution to defeat Computron’s minions from Dimension 12. When they go to Gwen’s room, they find a dark-hair girl, who is Sunny, Gwen’s cousin. Gwen’s mom insists they take Sunny with them. The team takes Sunny to the mission but they left her in Kevin’s car. […]

Ben is approached by a video game producer in order to make a Ben 10 video game. Unfortunately, this producer is actually working for Will Harangue, who intends to create a robot to destroy Ben. The producer has all of Ben’s aliens scanned, in order to have the robot learn their moves. The robot begins […]

Albedo profits from Ben’s fame and creates a play about him with the help of three alien actors based on several of the extraterrestrial forms in Ben’s Ultimatrix.

Baz-El is on a distant planet where he is stealing some valuable gems from some temple statues. Later, the temple guardian worshippers attack Baz-El. Ship suddenly hears Baz-El’s cries for help, and leaves Julie to help his old owner. Julie ask Ben for help to locate Ship, who left to help Baz-El. However, their break-up […]

Ben defeats an alien who was rampaging through Bellwood. The alien, named Galapagus, chronicles how he was kidnapped from his home world by Aggregor. He explains how he met four other aliens (Bivalvan, P’andor, Andreas, and Ra’ad), and they escaped him to end up crash landing on Earth. Ben mentions how they already found Bivalvan, […]

Jimmy Jones sees a meteor falling in a cave, where an alien plant attacks him. He tells Ben and his team about it, but only Ben believes him. They go in the cave but the plant isn’t there. The next day, Jimmy sees Ben going into the cave and talking to the plant. He takes […]

Gwen must juggle things around, in which she has to help Ben and Kevin recapture Dr. Animo, fill out invitations for her mother Natalie’s family reunion, help Kevin get into school, finish exams, and go to her best friend Emily’s piano performance.

Elena Validus and the nanochips return and impersonate Julie while the real Julie is at a tennis tournament overseas. Ben does not catch onto this until the very end when the real Julie returns and causes Elena to realize that she had never really loved and cared about the real Ben in the first place. […]

An evil creature known as Lucubra released from another dimension has plans to enslave the human race for its master. The Forever Knights intend to annihilate the creature at all costs and refuse Ben’s aid. Fortunately, Gwen ultimately succeeds in utilizing her increasingly strong magic to send it back from whence it came.