A college student takes over the family business in the field of organised crime.
Saotome, a sword master and guard of the Shogunate, pursues the mystery of a deadly aerial weapon that is responsible for the multiple deaths in town.
Upon his arrival to Dragon Island, ronin Yagi Hanzo, is propositioned by various shady individuals representing rival gangs to lend his services to them. Branded an enemy for his refusal to become involved with either side, he soon finds himself caught up in an intrigue extending beyond petty gang rivalries, involving a plot by Daimyo in Kyoto to overthrow the government.
