When the scar on the palm of his hand began to heat up and light gray "embers" penetrated into his blood from his fingertips, Shen Yan knew that there was another lingering obsession knocking on the door of reality.
He is a natural soul seeker and can see the "world of obsessions" condensed by the pain of the dead - the old alleys of Yong'an that are always raining with blood, the middle school classrooms where the clocks run backwards and bullying death is repeated, and the cruise ships that float in the deep sea and sink forever. Every time he stepped into the world of obsession, he had to sympathize with the tragic death of ghosts: the female college student whose throat was cut and clutching her mother's red umbrella that had not yet been returned, the pregnant woman who was poisoned and her abdomen was repeatedly dug at the wedding scene, and the children whose families were exterminated counted their families in the ruins that could never be reunited.
But he gradually discovers that the obsessions of these ghosts have been tampered with. The mysterious man wearing the same watch as his father, the spirit-binder organization that advocates "preserving the world of obsessions", and even the "embers" hidden in the scar on his own tiger's mouth all point to a more terrifying truth: the world of obsessions is not a prison for the dead, but a trap cast by the living with regret and fear.
When resolving obsessions must be at the cost of erasing the last trace of the killer's existence, and when protecting reality must be a bargaining chip for devouring one's own spirit, Shen Yan stands in the gap between the world of reality and obsession, and finally understands: Those who deserve to be redeemed most are never ghosts, but people who live with obsessions. And the umbrella-shaped mark on his palm has long been destined to become a bridge between human souls - or a sacrifice.
