五代将军德川纲吉（吉田辉雄 饰）当政时期，幕府政权稳定，社会繁荣。政府上下奢侈风气蔚然成行，大奥中的美女更是数不胜数。在这些美女中，只有少数能得到将军恩宠，大多数女人则要过着孤枕难眠的凄苦日子。除夕夜，大奥中的女人们进行裸体游戏，纲吉躲在暗处偷窥，无意中迷上了大腿上有着美人痣的光枝（御影京子 饰）。将军对光枝的喜爱迅速广…

A killer driven by revenge tracks down and murders the five women who sexually molested his mentally unstable best friend and drove him to suicide. All the while the police search the underworld for the killer, the press plays up the sensational sex killings, and the killer himself finds his resolve weakened by his bud…