Reiji Mano (Ryo Nishikido) receives a call from somebody with a desire to talk about his brother. When Reiji goes to the location to meet the mysterious person from the call, nobody turns up. Meanwhile, a body of a homeless man is discovered at a riverbed.

Reiji Mano (Ryo Nishikido) discovers that his sister who was murdered 25 years ago as a high-school student was pregnant, as he tries to gather more evidence related to this from the school teacher. Meanwhile, Nonna attends a drinking party after being invited by staff members from work.

Reiji Mano (Ryo Nishikido) has to supervise a shocking case which involves a vicious murder of one’s friend. In turns out that the suspect had murdered the victim with a knife after a serious quarrel.

Reiji Mano (Ryo Nishikido) tries to attain information regarding his sister from a high-school teacher. Meanwhile, despite all his efforts, Reiji feels deeply troubled as he is unable to uncover the clues which may lead to solving the complicated case.

Reiji Mano meets up with a school teacher in order to uncover the truth behind a murder incident which took place 25 years ago. He manages to attain new information about a former tennis player who fell off from a pedestrian bridge, which may lead to some valuable clues.

Reiji Mano who is now trying desperately to uncover the truth about the family murder, goes to visit the president of a food production company. However, a terrible gas explosion eads to shocking consequences.