An ancient artifact robs Kevin of his powers, rendering him helpless when Gwen and Ben find themselves in terrible peril. A curious alien box spells trouble for the town of Bellwood. And Gwen travels back in time to right a terrible wrong. It's Season 4 of BEN 10 ALIEN FORCE! And the shocking showdown between Ben and Vilgax will bring this Season to the most dramatic conclusion ever!
It's another exciting season as an alien doppelganger impersonates Ben and tries to destroy him with the Omintrix. Then Ben and the crew must rescue the shape-shifting, dog-like alien from the Forever Knights. And in a thrilling two-part finale, Ben must recruit the other Plumber's kids to help stop the Highbreed invasion of Earth.
It's hero time again for Ben as he saves the Earth from Vilgax's power. This season, Ben, Gwen and Kevin go head-to-head with repo men, bounty hunters and a charming long, lost villain. Ben winds up lending a hand to a popcorn-munching alien and Julie (literally!). If Ben can keep the Omnitrix under control, he might stand a chance at saving Grandpa Max once and for all.