In Shanghai in the early spring of 1983, in the early days of reform and opening up, old and new trends of thought collided fiercely, and neon lights intertwined with blue brick alleys in a special era. There are still many factory chimneys, but the individual economy has sprouted like bamboo shoots. Hongqiao Cemetery is located at the junction of urban and suburban areas, surrounded by textile factories, hardware processing factories and shantytowns. The cemetery is full of green pines, and the European-style angel statue left before liberation glows with an eerie luster in the moonlight. On the surface, it is a serial murder case, but in fact it involves secret human experiments by the Japanese army thirty years ago, the cover-up of the past in a special era, and the conspiracy of a cultural relics smuggling group in the early days of reform and opening up.