A violent fire one evening kills a husband and wife couple and burns their Kazusaya rice shop to ashes. Their daughter Sachi manages to make it out alive, but she claims the fire was set by henchmen from the rival Harimaya shop who abducted her sister. After policeman Watanabe Shogoro hears her story, he begins investigating the case, but desperate to avenge her parents' deaths, Sachi later enlists the aid of a mysterious woman who offers to kill Harimaya for a price. Watanabe soon discovers that there is more to this case than meets the eye.