Oryo, a dice-shaker at a gambling den with a full-back tattoo, was arrested during a police raid. Three years later, on the day of her release, the Okajima gang leader, Hyoe, who had promised to welcome her, was nowhere to be seen. She was shocked to learn from a woman named Yuki that the gang leader was dead, and that he had taught her the pleasures of bondage. Yuki was engaged to Masamichi, Hyoe's son who had succeeded him as the second-generation leader.