Ben Tennyson is a well known hero throughout the universe. At the age of 10 he got his hands on a device called the Omnitrix which helped him save the world. After years and a previous incident with Vilgax, he created the Biomnitrix. Now that Vilgax is back, not even the Biomnitrix is enough to keep Ben safe, making him get the Omnitrix back, but now this watch evolved far beyond belief.
Vilgax, a specimen of planet Vilgaxia that has already conquered two Galaxies, yet he's deceased. His power is off the charts and that was before the Omniwar! Now he possesses the Hands of Armagaedon along with the Chaotic Orbs. he also absorbed a bunch of beings from the Null Void so that will boost his immense strength even more to accomplish his goal, take the Omnitrix and Destroy Ben Tennyson.