There was a fire in the middle of the night at Kairoutei that was caused by a man. Even though Jiang Yuan Xing managed to stay alive, she was severely burned, disfigured and had a mark on her neck from being strangled and everyone suspects that her boyfriend and rich second generation Cheng Cheng was the person behind everything. The fire alarmed the police and they started to investigate everything, not only the arson but everyone in the Gao Family.

The film is based on the best-selling suspense novel "The Long Corridor" by Keigo Higashino. There are countless secrets hidden in the cloister pavilion mansion. After the rich merchant died of illness, a fire murder case that occurred a year ago was revealed, involving the first heir of the estate, that is, the illegitimate son of the deceased, making the distribution of the estate complicated.

A woman (Takako Tokiwa) risks her life to exact revenge for her murdered lover.