Aoi is a married woman who lives modestly with her husband in a small apartment in Tokyo that she bought on credit. One day, Aoi former classmate and boyfriend, Zuo Ci, comes to visit her. Zuo Ci was once an honest man, but he went astray and has become a thug. Hearing rumors that Aoi has found happiness, Zuo Ci explodes with jealousy and resentment, and gets his superiors involved in the yakuza gang and kidnaps Aoi. After thoroughly torturing her, Zuo Ci and his men tattoo Aoi's body, marking her as a slut!