Senior Inspector Chi Yu investigates a series of car accidents and accidentally discovers an umbrella-shaped mark on the neck of the deceased. On the eve of the conclusion of the case, he was hit by a mysterious truck and was seriously injured. When he was on the verge of death, his soul was sucked into the underworld and became the last wandering soul. He tried his best to escape, but bumped into Yama Guyuan during his escape, and accidentally tore the taboo chain around his neck. In order to escape from certain death, he jumped into the River of Purity, and accidentally spied on the strangeness of the serial cases in the river.
Before he could delve deeper into the research, the wandering soul he was living in unexpectedly returned to the human world with the key to reincarnation and became a witness to a series of car accidents.
From then on, it became the food for the evil spirits that roamed the world.
In order to find out the truth about the car accident and return to his original body, he was forced to cooperate with Gu Yuan and use modern criminal investigation technology to solve many cases in the human and underworld realm. He unexpectedly discovered that the souls that had died tragically, including the wandering soul in it, had been cursed with a God-killing curse.
However, Gu Yuan, who was deeply involved in searching for the truth, suddenly took action, imprisoning him in the ice coffin of the underworld, wanting to prevent everything from happening, and was paranoid about taking him as his own. He did not hesitate to use his own life as a sacrifice, and forcibly signed a life contract with his soul. In despair, Chi Yu discovered the abnormality of his soul body and tried his best to return to his original body. He thought he was out of trouble, but he didn't want to fall into the conspiracy set by others.
Until the end, Gu Yuan cruelly cut out half of his heart to make the key to death, and forcefully stuffed it into Chi Yu's palm.
"Either use this key to kill me to break the curse, or accompany me to eternal reincarnation!"
Intention: The crowd is in such a hurry that we will meet each other eventually
