After playing pool one evening, Spike walks into the aftermath of a large battle between armed agents and a large man seemingly dressed for an evening at the opera. The large man attacks Spike with the largest possible arsenal that one person can carry. Defending himself as best he can, Spike barely makes it out of the battle alive. Awaking on the Bebop wrapped up in bandages, Spike rests as Jet goes to Bob, his ISSP source, for help.
In the year 2071 humanity has colonized the entire Solar System through the use of 'Phase Difference Space Gates'.
A catastrophic accident occurred during the development of the Gates, damaging both the Earth and the Moon, heavily irradiating the surface, and forcing most of mankind to evacuate to other planets of the Solar System.
Wherever humanity goes, so goes its criminal element, and thus the need for those who hunt criminals. The newly formed solar system police reinstated the bounty scheme of the Wild West. Cowboy Bebop is the story of the four inhabitants of the spaceship Bebop, and the living they barely make at bounty hunting.