In order to conceal past corruption by the government, the Kyuryu group proceeds on a plan to destroy a street and build a casino. To stop the Kyuryu group, members of SWORD begin to move.

Members of SWORD win against Wangan Rengogun, which is led by Kohaku (Akira). The city becomes peaceful again. Nevertheless, the most brutal gangs, Doubt and Prison Gang, appear. They try to dominate the area controlled by SWORD.

S.W.O.R.D. Chiku is a devastated and dangerous town with 5 gangs – Sannoh Rengokai, White Rascals, Oya Kohkoh, Rude Boys and Daruma Ikka – fighting fiercely. The name S.W.O.R.D. comprises of the first letter in each of these gangs. Before these 5 gangs, the legendary Mugen gang dominated the town. Mugen and the Amamiya Brothers (who did not submit to Mugen) clashed and Mugen disbanded, but …