Ben 10: Alien Force

MAGISTER GILHIL of the Plumbers catches Ben, Kevin, and Gwen in a sting operation. He threatens to lock them in the Null Void if they continue to meddle in alien affairs and he confiscates Kevin's badge. Meantime, a Highbreed Commander is forced into a deal by a mysterious and powerful villain called DARKSTAR.

During a fight in an abandoned warehouse, Ben is accidentally transported to a DISTANT PLANET alongside a HIGHBREED COMMANDER. They shortly discover that the planet's creatures are too much to handle alone and that they must work together as equals if they want to get off the planet alive.

Kevin and Gwen are worried when they hear rumor that Ben has been attacking the Forever Knights without reason or provocation. Their troubles are only complicated when they discover that Ben isn't Ben, but a Galvin doppelganger called ALBEDO BEN who is out to destroy Ben with the power of his own Omnitrix.

Ben grows worried as he slowly starts to lose control of the Omnitrix. He seems to only be able to transform into BIG CHILL and has trouble remembering what happens afterward. He asks JULIE to follow him around to help discover what he is doing. Julie uncovers the truth behind Ben's ODD BEHAVIOR but must interrupt Kevin and Gwen's formal dance date to ask for help

When Kevin needs some alien tech fixed, he takes Ben and Gwen to go see COOPER (a kid genius who is highly adept at working with and manipulating any kind of technology). Upon arriving at his house they soon discover Cooper has been kidnapped by the DNAliens. After following Cooper's trail to LOS SOLEDAD, Ben, Gwen, and Kevin discover a secret Highbreed base

DR. CHADWICK, a mad scientist for the FOREVER KNIGHTS, has built an ALIEN GUNSHIP to aid in the knights in their quest to kill the dragons. In order to power the gunship, Dr. Chadwick needs the powers of the shape-shifting SHIP (from “Pier Pressure”) and sends MORTON (a FK ruffian) to kidnap him.

A bigger evolution of the HIGHBREED has attacked Ben, Gwen, and Kevin in the city. They are able to chase the Highbreed off but not before BEN'S PARENTS discover Ben's secret. When they confront Ben about it, he continually lies about it until his parents get upset and ground Ben. Ben, in turn, rats out Gwen who gets grounded, too and Kevin is left by himself to infiltrate a large tanker.

Ben goes into the Null Void to aid the plumber's helpers defeat D'Void (formerly known as Dr. Animo).

Ben and company rescue Tyler, a runaway prisoner of the DNAliens while trying to stop them from completing the Jump Gate.

Ben, Gwen, and Kevin are ambushed by a group of DNAliens and are saved by the prince of the arachna-chimps (spidermonkeys) SIMIAN. Simian has come to Earth to get supplies that will aid him in recovering a royal treasure. The CRYSTAL will allow him to regain the power he lost on Arachna to an evil dictator. Ben, Gwen, and Kevin accompany the prince to a base on the MOON

Ben and company need to return a baby monster to its parents before the DNAliens find it.

Ben must recruit the other plumber's kids to help stop the Highbreed invasion of Earth once and for all.

Ben must recruit the other plumber's kids to help stop the Highbreed invasion of Earth once and for all.