The leader of the Shinhoku Group, Shinhoku Shinji, suddenly dies in an unexpected accident one day. Following this, many members defect to the hostile organization, the Yorozuya-kai. This weakens the Shinhoku Group, but due to the wishes of the remaining members, Shinji's wife, Saori, takes over as the leader. However, she falls into a trap set by the Yorozuya-kai and faces the greatest humiliation of her life, enduring public humiliation while wearing a sailor uniform for the first time in decades...
