Folklorist Jiang Tong returned to his hometown for a funeral and discovered that three generations of men in his family died mysteriously before the age of 49, and every night he could hear someone singing "Crying Seven Passes" from the Northeastern funeral rites. She thought it was just superstition, but she found a strange needle hole on the back of her father's body. As the investigation deepens, a tampered genealogy, an old man who is sometimes sober and sometimes crazy, and a released prisoner who calls himself "Yin Yang Eyes" all point to a family blood feud that has been buried for seventy years. This is not a ghost seeking life, but a psychogenic murder that lasts for three generations and is as precise as clockwork - when rituals become weapons, memory is the sharpest knife.
