Ben 10: Alien Force

Vilgax reappears with a new army and new and stronger powers.

Vilgax reappears with a new army and new and stronger powers.

Ben, Gwen, and Kevin are sent to investigate an attack by Pyroxivors (a race of subterranean alien cattle) on a oil drilling operation.

A species of humanoid cat/fox-like aliens come to Earth for a Popcorn Festival in Walton.

After receiving a message from a five year-old alien named Probity, Ben convinces Kevin and Gwen to help end a war on the child's home planet.

Ship's owner decides he wants him back and hires some Repo men to retrieve Ship.

An alien bounty hunter named Sunder attempts to remove the Omnitrix from Ben.

An earthquake awakes an officer who was put into stasis, only to be awakened if the Highbreed lost the war. So he triggers a weapon to destroy Earth.

Kevin is upset by his inability to change back to human form and he vents his frustration by blaming Gwen for her inability to help.

Vilgax frees Ghostfreak from his prison for the secrets of the Omnitrix, but Ghostfreak betrays him and starts to possess the people of Vilgaxia.

Kevin and Darkstar set aside their differences to find an alien artifact called the Dominus Librium which can cure their respective conditions.

Ben, Gwen, and Kevin find a curious alien box called the Naljian Destructor, which can robotically duplicate anything and anyone it sees.

Zaw-Veenull, a Luoadan Ambassador asks Ben to deliver their Crown Prince Tiffin to Jarret in order to keep peace between the two species.

In the middle of a fight with another Techadon Robot, Ben, Gwen, and Kevin are unexpectedly transported by the Omnitrix to an alien planet called Primus.

Gwen, as Lucky Girl, steals the Arcamada Book of Magic from Hex's mansion that allows her to travel back in time so she can stop the Omnitrix from overloading back in Vengeance of Vilgax.

When Ben gets sick, he's pleased to see an old friend, Tetrax, but is caught off guard when Tetrax demands Ben to give him Chromastone.

Max sends a message to the Plumbers' Helpers when Ben is attacking him at a space station. Alan, Helen, Manny, and Pierce arrive to the space station and plan to stop Ben.

A deadly criminal known as "Ragnarok" breaks out of the Null Void, and begins a search for a mysterious key.

Albedo steals the incomplete Ultimatrix (a new device which Azmuth is working on) from Azmuth's lab and completes it. He tries reverting himself to his old form but he is not able to, for he needs the Omnitrix.

Albedo steals the incomplete Ultimatrix (a new device which Azmuth is working on) from Azmuth's lab and completes it. He tries reverting himself to his old form but he is not able to, for he needs the Omnitrix.