The Yakuza is in turmoil when Osaka's ruthless Danno Organisation has ambitions to take over and control the entire Japanese underworld. After staging a series of successful territorial battles, they make their way to Yokohama's busy port district with the intention of ruling that too. An alliance is formed between the remaining Yakuza clans to take on the might of the Danno Organisation. It is at this time that Yokohama Yakuza, Tsukamoto, is released from prison after eight years, hoping to lead a quiet life away from the gang's activities. But when Danno's men assassinate his boss, he is forced to lead his gang in the territorial war. Tsukamoto believes the way to win the war is to propose a truce and enter into a legitimate political and business alliance with Danno, but this leaves little room for honour and payback for his boss's murder. Tsukamoto is to learn that things have changed while he was in prison, as he tries to keep the old Yakuza code with this new ruthless breed of criminal who lives and fights without honour.