A human man named Halley, who was lost in space far from Earth, tries to make his way back to his home. One way to go back to earth fast is with a wormhole. But a wormhole in space was expensive, and if he wanted to steal it, he needed a lot of preparation. So, Halley worked as a lone hitman, traveling from planet to planet doing aliens' chores or fixing problems in exchange for money. Halley could be a hero, but he could also be a bad guy. During his adventures, he'll not only acquire the items he needs to get the wormhole, but he'll also gain friends and allies who will accompany him on his adventures. Not only friends, but also enemies.