In 2071, the place where humans live has been extended to the entire Solar System , and the phase difference space gate makes it possible to travel between planets .
Fifty years before that, in 2022 AD, a major accident during the development and test of the phase difference space gate above the earth caused a devastating blow to the earth and the moon. Part of the moon was separated from the moon, and countless fragments fell into stony meteorite and fell on the earth. The surface became barren.
Ironically, the information obtained from this accident facilitated the completion of the phase difference space gate. As the surface is polluted by radiation, humans gradually immigrated to other planets in the Solar System. The country no longer exists, and people of different languages and cultures live together, forming communities with unique cultural characteristics on each planet.
Just like the chaotic period after World War II , a wonderful and vibrant new era has arrived. The power of the underworld in the economically rejuvenated areas is gradually expanding. On the other hand, as the gap between the rich and the poor has further widened, criminals have also increased at a rapid rate. This period was later called Roaring Twenties. All kinds of mafia and underworld elements emerge in an endless stream, and illegal activities secretly carried out such as drug dealing have also expanded.
As time passed, the planets and satellites became independent nations, and the generation that did not know that the earth also grew up. The phase difference space door technology has become completely stable and has become an indispensable part of people's lives. The Solar System Police (Inter Solar System Police, or ISSP) is formed between the planets to jointly fight off interplanetary crimes.
Also established at the same time as ISSP is the bounty boss system commonly known as cowboy law. After applying for a license, the bounty hunter can arrest the wanted criminal and receive a specified amount of bonus. The 300,000 bounty hunters running around the Solar System for the bounty became active in this way.
Spike and Jet are bounty hunters who drive the spacecraft BEBOP in the universe to capture fugitives and earn bonuses. The two men in interstellar journey, to get to know who are charged with huge debts, addicted to money-grubber beauty Philippines (Faye) and computer prodigy Ed (ED) , and adopted a highly intelligent dog of data Ain (ein) .
From then on, four people and one dog wandered in the vast universe, experiencing all sorts of joys and sorrows in their lives and the lives of others, and also looking for their own past.
