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 …

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.