See Also: About Ben 10

About

Ben 10: Alien Force is an American animated television series created by "Man of Action" (a group consisting of Duncan Rouleau, Joe Casey, Joe Kelly, and Steven T. Seagle), and produced by Cartoon Network Studios. It is a sequel to Ben 10. The series premiered on Cartoon Network on April 18, 2008 in the United States. The series was originally produced under the working title of Ben 10: Hero Generation. Ben 10: Alien Force also appeared at the 2008 San Diego Comic Con.

Plot

Five years after the events of the original series, 15-year old Ben Tennyson has returned to a normal, everyday life. His adventures done, Ben has taken off the Omnitrix and has grown from a young boy into a confident teenager.
However, a new menace is fast approaching Earth. A race of fanatic aliens, the Highbreed, has secretly arrived on Earth with the intention to destroy the planet. Max, Ben's grandfather and a member of the planet-defending Plumbers, has already set out to try and stop them, but has not been heard from since. Ben has no choice but to once again use the Omnitrix in order to fight back. The Omnitrix has re-calibrated to Ben's teenage body, resulting in a new form, functions, and aliens to transform into.
Ben isn't alone, either. His cousin Gwen is once again tagging along, and her natural abilities have significantly grown over the years. Also joining Ben is his former rival Kevin, who has served his time in the Null Void and is trying to reform (though he still partakes in less-than-legal activities). Over the course of the series, Ben, Gwen, and Kevin fight off the Highbreed, do battle with both old and new enemies, and even makes new friends with child Plumbers, some of which bear DNA and supernatural forms identical to Ben's old Omnitrix aliens.