Ben 10 was a normal ten years old kid until the day he found the Omnitrix. The Omnitrix is a watch-like device that allows the user to transform into various alien forms by combining the DNA of the selected alien with the user's own DNA. There are several safeguards about the Omnitrix including transforming into an alien different from the one that is selected on the control dial, and ten minute auto time-out. The Omnitrix gave Ben the power and he became a superhero. With the help of his Grandpa Max and Gwen Ben Tennyson defeated Vilgax, an alien war lord determined to rule Earth. Ben continued to fight defend the Earth, but before he turned eleven he found a way to remove the Omnitrix and his life went back to normal, for a while.