Jet and Spike are out chasing thier next bounty named Giraffe. When Spike is following Zebra, Giraffe's old comrade, he meets a kid named Wen, a musical child prodigy. There is something strange about Wen. Jet discovers that there is a connection between Wen and a stone Giraffe handed to Spike with his dying breath.
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.