Dragoroth makes a return, and forces Jack through a mysterious wormhole. Upon doing so, Jack is split into himself and Jeld, cutting his power in half. The twosome meet Doctor Uranium, who is fascinated with their split, and decides to help them by opening a shop and explaining that they are in the Dimensional Vector, a strange world that connects multiple, simulated environments in the form of planets.
The gameplay is very similar to the first game, but Jack is only split into two entities, so it is easier to level. However, enemies get harder a faster pace, too. The second 'Jack' will be his own character, and his name is rumored to be Jeld. He and Jack will have more abilities than the six 'Jacks' did in the first game, to allow for more personal style.
Dragoroth is the evil wizard who attempted to drain Jack of his energy in the first game. In this game, he forces Jack through a wormhole that splits him into two people, Jack and Jeld. He is the final boss of the game.