Pass the Yin things, do not take any living things.
At midnight, Shunfeng courier Jiang Yan received an urgent order and delivered it to a gloomy old house on the outskirts of the city. The old lady who opened the door handed him a package wrapped in paper, and his own name was written in the recipient column.
In the package were photos of him at the door of his grandmother's house when he was seven years old, old newspaper clippings about the drowning of a boy in Wuminghe River in the suburbs 18 years ago, and a piece of faded red paper with eight characters on it: "Meet you at the old place on July 15th." The signature was "Your real family."
Jiang Yan always thought that he was an orphan.
Those childhood memories that he had deliberately forgotten awakened together with this strange package - the cold river water, the vague crying, and the "self" who would always sink under the water. He was forced to embark on a journey to find his roots, only to find that his grandmother's old house had been abandoned for many years, and the old man in the town mentioned a name in silence: Xuan Ye.
Every July 15th, the river flows backwards and the dead come ashore. The gatekeeper of the underworld and the guide of the underworld. All this points to the secret hidden in Jiang Yan's bloodline - he is the gatekeeper selected by "Xuan Ye", responsible for delivering packages that do not belong to living people in the gap between Yin and Yang.
When the clock struck midnight, he rang the next doorbell. The door opens and the person handing out the package may be your neighbor, your relative, or yourself.