The gang look into the Pacific Garbage Vortex when some people have gone missing. When they arrive, they find the missing people and two agents sent by Colonel Rozum while dealing with giant seagulls and a sentient trash monster.

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.

The Forever Knights discuss their plan for the weapon and Ben and the team come in to fight with Cash, J.T., and Oliver filming the scene. Kevin gets angry with them not helping and Psyphon comes in to destroy Cash and J.T., believing them to be the masterminds behind Ben Tennyson.

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.

Azmuth contacts Ben on the Ultimatrix and is not happy with him for failing to stop Aggregor from claiming three of the four pieces to the Map of Infinity. When Ben tells Azmuth that scolding him is not going to help, Azmuth agrees and then teleports Ben, Gwen, and Kevin to the Rust Bucket in […]

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 […]

With Ultimate Aggregor having all four pieces of the Map of Infinity, he’ll be on his way to the Forge of Creation (Alien X’s home planet). Professor Paradox helps Ben, Gwen and Kevin get to they need to go, but after Paradox left, Ben and the others ran into Ben’s younger self. The four of […]

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 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 […]

Azmuth reveals in his memories how Old Sir George had acquired the great and mighty sword of Ascalon, and how he had sealed Diagon the first time millennia ago. In addition, he reveals the real reasons for his eventual creation of the Omnitrix and Ultimatrix.

Movie star Jennifer Nocturn appears to be in danger, but before Captain Nemesis can act, Ben interferes and saves the day. Jealous, Nemesis stages a competition against Ben, which he loses. Nemesis then kidnaps Julie, who was shown taking her anger over Jennifer out on the tennis courts. Nemesis then intercepts Jennifer’s helicopter. When Ben […]

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

Ben, Gwen, and Kevin are summoned to Plumbers Academy to go under training. They create a good friendship with an alien named Tack and Ben dislikes the drill instructor, Magister Hulca, that is being targeted for revenge by a menacing Tetramand.

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.

Simian accidentally unleashes a Xenocyte Queen which orchestrates an invasion of the Arachnichimps’ planet. When Eunice goes missing, Ben, Gwen, and Kevin end up helping Simian liberate the Arachnichimps’ planet from a DNAlien version of the Arachnichimp Mizaru.

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 informant turns out to be a […]

The ultimate aliens inside Ben’s Ultimatrix demand their freedom and end up sucking Ben into the Ultimatrix. While Gwen unleashes her astral projection (in the form her innermost anodite self) enters the Ultimatrix to help Ben, Kevin travels to planet Galvan Prime to convince Azmuth to help.

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. […]

While taking a ride in Ben’s car, Ben and Gwen discuss that Ultimate Kevin is still continuing his rampage on everyone that wronged him and that he needs to be taken care of. Just then, Ben accidentally runs over Argit, but he survives. Argit explains that he needs their help to hide from Ultimate Kevin.

A strange alien is offering big money (over $1 million) to someone who can open a safe (which is really a containment suit). That alien is revealed to be P’andor, who wants to be free of his suit. Eventually, Kevin accidentally releases P’andor in his radioactive form, whom Ben, Gwen, and Kevin have to stop.

Dr. Animo returns with a plot to transform eggs into pterodactyls.

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.