The following is a list of episodes for the American animated television series Ben 10. The series was created for Cartoon Network by "Man of Action", a group composed of writers Duncan Rouleau, Joe Casey, Joe Kelly and Steven T. SeagleThe series is followed by Ben 10 Alien Force[[1]].
After the incident with Vilgax, Grandpa Max tells Ben and Gwen about his secret past. He really was a plumber, but not the garden variety version. He was part of a secret government organization known as "The Plumbers," that dealt with extra-terrestrial and paranormal phenomenon that others couldn't. The organization was disbanded after he defeated Vilgax for the first time. During one of Ben's regular acts of heroism, they run into Max's old partner, Phil. Phil is still in the business of hunting aliens, though he is now a freelance agent. He suggests that they remake The Plumbers, but Max is against the idea. Ben, however, is much more enthusiastic about the idea.
Max's Plumber equipment detects that an ancient mask had been unearthed. This quickly triggers a change in Max's attitude; he claims that this artifact would lead to the most powerful weapon ever designed, and that he should retrieve it before it falls into the wrong hands. Max immediately becomes more impatient, worse-tempered, and far stricter. Upon retrieving the mask, the Tennysons come into conflict with The Organization, now called the Forever Knights, who want to find the weapon themselves. The Tennysons end up with the mask after a struggle and use it to find the ultimate weapon, the Sword of Ekchuah, inside of a Mayan pyramid.
Gwen dons her Lucky Girl costume again upon finding the mystical Keystone of Bezel at a convention in Las Vegas. Rather than extremely good luck, the Keystone greatly strengthens all of Gwen's natural abilities to superhuman levels tenfold and granting her superhuman agility, enhanced reflexes, and durability. At the same time, Hex has been busted out of prison by his niece, Charmcaster, and seeks to use the keystone to restore the destroyed charms. Charmcaster tricks Gwen into trusting her so that she could easily take the Keystone and give it to Hex.