A shriek echoes in a warehouse at the Wangan area and then the sound of flames. Hasumi Kayoko and her german shepherd Masa, stare at those flames. The pair have witnessed a heart-rending case in which human deeds and desires swirl about like flames … … Kayoko is the eldest daughter of the Hasumi family. An investigator at the Hasumi Detective Agency that her mother Kyoko runs, she works with her colleagues Kimizuka Nana, Miura Michiko, Nagashima Momoko and Ejima Ruriko, to help suffering women. On the other hand, she continues to obssess about her father’s mysterious death seven years ago. One day, Fujimi Sakiko, who is troubled by a stalker, comes to the agency with a request for them to investigate and protect her. And so, Kayoko and Masa accompany Sakiko on her morning jog. Along the way, they discover the blood-soaked body of a man as they approach a back alley from the main street. Kayoko confirms that there is no pulse and tries to report this to the police, but her mobile phone does not have any reception. Leaving Masa at the scene, she goes in search of a public phone with a terrified Sakiko. When the two of them return, the dead body has suddenly disappeared and Masa is lying on the ground. Even if the body had been carried away, it would not have been easy to knock out a former police dog like Masa. Furthermore, Kayoko and Sakiko are summoned by the police to identify the man who should have been dead, Inami Takashi. Kayoko cannot make sense of the situation, but Takashi says he had faked the death of his missing older brother, Hiroshi, to save him from an organised crime syndicate that is in pursuit. Meanwhile Kayoko gets information from Shiina Yusuke, the owner of the bar that the members of Hasumi Detective Agency frequent. She sets out to investigate in order expose the real nature of the man who knocked out Masa and gets close to a big lie. With that as a start, Kayoko draws near to the truth of the death of her father which was considered a suicide.