Ben 10

10-yr-old Ben Tennyson is spending his summer traveling the country with his Grandpa Max and his cousin Gwen. One day he discovers an alien device called an Omnitrix which attaches itself permanently to his wrist. With it he can transform himself into ten different alien forms, each with a unique set of powers. Young Ben must use to learn his new abilities to fight aliens and criminals alike--although he's not above a little alien mischief as well.