The story is set in Ueno, Tokyo, six years after the war. The protagonist, Akihisa Takashiro, who used to be a policeman and is now a detective, agreed to take on the commission from the Tsukioka family on behalf of his former boss, Kazuma Arishima, to help the Tsukioka family search for and investigate the disappearance of the eldest daughter, Yuriko Tsukioka. Yuriko Tsukioka was once the person Akihisa Takashiro had a relationship with, but the two separated five years ago due to the war. In order to meet the client, Keiichiro Tsukioka, Akihisa Takashiro set foot in Zushi again after seven years. However, Keiichiro Tsukioka told him that his daughter Yuriko was actually dead…

During this period, there were frequently cases that even puzzled the police. The cases began with the discovery of the mutilated body of a young woman by the river, but this was just the beginning of the serial murders in Ueno. The tragedy, which started from the intertwined threads of searching for Yuriko Tsukioka and the serial murders, unfolded in Ueno, which still bore the marks of the war.