Chen Yan is twenty-four years old. He earns a living by guarding a funeral parlor in the old city. He is used to seeing life and death and does not believe in ghosts and gods. However, on a cold night, he picked up half of the Yin Order that was as black as ice. From then on, he was forcibly bound to the identity of "the Yin Order on behalf of the human world" and stepped into the terrifying abyss at the intersection of Yin and Yang.
He has no Taoist magic, no magical weapons, only a broken Yinsha, a soul-locking chain, and a pair of Yin-Guan Yin eyes that can see through evil. He is forced to walk through the shadows of the city every night - the water evil with a baby crying in a deserted building, the decapitated soul repeatedly searching for a path on the bus late at night, and eating food in an abandoned hospital. The resentment of the yang spirit of the fetus, the hungry ghost hiding in the cracks in the wall in the urban village, the hanged ghost deep in the old house seeking revenge... One hundred and eight strange things, one hundred and eight episodes of blood and tears, behind every evil ghost is a buried human tragedy, and every ghost capture is a frightening game with death.
Resentment corrodes the bones, evil spirits are lingering, and ghosts follow. If you are not careful, your soul will fly away and turn into blood. Chen Yan struggled with fear at the beginning and then followed the orders. During the soul-locking journey, Chen Yan uncovered secret secrets one after another. He also got closer to the truth about his own fate step by step. He also uncovered a shocking conspiracy that spanned Yin and Yang, used living people to support evil spirits, and sacrificed thousands of souls.
The underworld is not here, the world of the sun has no owner, evil spirits are rampant, and evil spirits hide in the human heart.
In his mortal body, he holds the yin messenger token, guards the boundary between yin and yang, hunts down evil spirits from all directions, and saves the remaining souls in the world.
The endless night is filled with ghosts and shadows. Once you embark on this path of destiny, you will never look back.