The last takeout order on a rainy night drags Lin Mo, a takeaway worker who is struggling on the edge of rising rent prices, into a strange mystery that spans seventy years.
Behind the ajar door of Room 1704 of Jinxiu Huating, there is no hot meal, only a Republican cheongsam that can be put on and taken off by oneself. Hidden in the cheongsam is a ghost named Shen Qinghe. Her voice is as hoarse as sandpaper, and the purple bruises on her wrists ooze dark red liquid. What she is looking for is another cheongsam that disappeared in the fire in the 26th year of the Republic of China - the collar is embroidered with lotus flowers, and there are words hidden in each flower.
Lin Mo soon discovered that this search was closely related to him: the ghost had a similar appearance to his grandmother, the nightmare of the fire always haunted him at midnight, and even the crescent scar on the tiger's mouth on his grandfather's left hand perfectly coincided with the mysterious man who took the cheongsam away. What's even more strange is that an urgent order suddenly arrived from the old post office seventy years ago. The delivery address was exactly 1704, and the sender's surname was An - the silk and satin merchant who was said to have disappeared in the fire.
When a corner of the cheongsam was exposed under the bed board in the rental house, when the patrol room uniform in the old photo overlapped with his grandfather's figure, when the words "rescue" and "kill" appeared alternately in the flames, Lin Mo finally understood: that aqua cheongsam wrapped not only Shen Qinghe's obsession, but also the secrets that three generations of the Lin family dared not tell.
What he didn't know was that with every word he solved, the marks on his wrists would become deeper, and he would be one step closer to the fire that had burned for seventy years...
