The Man with a Sinister Laugh

When Ryuji - the Gun Slinger, a drug addict leaves hospital to which he was taken after a gunfight by a notorious killer named Gin of Colt, he is employed as a bodyguard by Yo Sangen, chief of a narcotics smuggling ring.

A young yakuza just released from prison for a crime he didn't commit, a police inspector determined to clean up the corruption in his own hometown, and a deranged assassin who lives to kill collide in a port town overrun by rival gangs, with two women, both stuck in relationships they are trying to escape from, stuck in-between.

The fourth film in the Tales of a Gunman series. When Ryuji throws his pistol into the sea, he is attacked by a man who calls himself Sabu and says that he is the younger brother of Colt Jo's killer. When Ryuji escaped difficulties with one blow knocking out the enemy's weapon, Sabu reveals that Colt Jo is in the hospital in Gifu. Ryuji decides to visit his old enemy. However, he does not know that this is a trap.