Two different alien races are at war. Representatives of each race have landed on Earth to battle it out here, but they've taken human form and they...
When 10-year-old Ben Tennyson discovers a mysterious device, he gains the power to change into ten different alien heroes, each with uniquely awesome...
Five years later, 15-year-old Ben Tennyson chooses to once again put on the Omnitrix and discovers that it has recalibrated and can now transform him...
