Ben 10: Omni-Tricked (Part 4 of 4)

When ten-year-old Ben Tennyson discovers a mysterious device, called the Omnitrix, he develops the ability to transform into ten different alien heroes. After his meeting with Vilgax, Ben continues to transform rapidly without stopping or be able to revert to human form. While Vilgax tries to take the energy of a volcano to recharge his ship and return home, Ben gets the idea to update the Omnitrix and save the planet from his enemy.