Ben 10: Journey to Galaxy Extreme

The story begins after 3 years after Aggregor is defeated. Ben, Gwen and Kevin are bidding goodbye to each other. Gwen is going for college, Kevin is going for 'Inter-galactic space jam' the biggest racing event in the universe and for further plumber's training whereas Ben prefers to stay in Bellwood protecting it.

Three weeks later, while fighting Forever Knights as Rath, Ben sees a Swampfire coming from nowhere and defeating Forever Knights easily and fleeing them. To the surprise of Ben, that swampfire was actually a human who had used a device similar to omnitrix but with a little difference in size and colour.

The boy rather older than Ben was extremely very smart. He was tall, musscular, deep-chested and fair and had straight black hair and eyes. He introduced himself as Jacob 'Jake' Stamford and told Ben that a very dangerous criminal from galaxy extreme has fled. Ben enquired about it. Jake told that it is the place where the strongest species of universe and plumbers with very high posts live. This is a galaxy separated by other universe with the help of the time stream of Forge of Creation preventing the intruders. Here live the many mythical creatures like unicorns, griffin, and aliens like celestialsapians, zargons etc. He also told that it was his ancestors who started plumbers council to curb the growing violence in the universe.