Five years later, 15-year-old Ben Tennyson chooses to put on his Omnitrix again and discovers that it has recalibrated and can now transform him into 10 completely new aliens. Alongside his super-powered cousin, Gwen Tennyson, and his former equally powerful enemy, Kevin Levin, Ben is on a mission to find his missing grandfather, Max. To save his grandfather, Ben must confront the DNAliens, a powerful alien race determined to destroy the galaxy, starting with planet Earth.