In 1870's Tokyo, Den steals to support the daughter of her first marriage and her consumptive second husband. She falls in love with a young policeman, but is coerced into becoming the mistress of and procurer for a vice boss. After the deaths of her second husband and daughter, Den moves to Yokohama. There she runs a casino for the vice boss. Her remorseful first husband and the disgraced policeman follow her. Den kills her former husband and the vice boss, but when she tries to escape with the casino takings, she's arrested and returned to Tokyo to stand trial.