Shen Yan just wants to live an ordinary life, quietly running his nearly bankrupt funeral-supply shop.
But fate has other plans. He carries the bloodline of a soul ferryman and was born with Yin-Yang Eyes. The ancestral jade pendant on his chest also nurtures an ancient battle spirit named Qing Ying. She is both his good-luck charm in times of danger and the Shen family’s last trump card.
But when vengeful spirits begin appearing one after another, from a “water ghost” haunting a client to a “mirror spirit” wandering a hospital, Shen Yan discovers that the power of the ancestral “contract” is not simply about destroying them. It can transform spirits bound to the mortal world by overwhelming emotions into “contract spirits” who protect the people around them.
Even more troubling, his own fated contract spirit, Qing Ying, who should have no memories and know only how to protect him, is beginning to lose control. At times she unleashes an unfamiliar murderous intent; at others, she shows the dead a compassion that goes beyond their contract.
At the same time, a mysterious organization called Guixu emerges from the shadows. They intend to shatter the boundary between yin and yang and create a world where humans and ghosts are indistinguishable. As Shen Yan fights them, a blood-soaked fate spanning a thousand years is gradually revealed: Qing Ying’s shattered memories, the sacrifice of Shen Yan’s ancestors, and the madness and hatred of Guixu’s leader, born of an all-consuming love...
Shen Yan slowly realizes that what he has inherited is not merely a power, but an impossible dilemma. When Qing Ying’s memories fully return, and she must choose between him and the obsession that has bound her for a thousand years...
Should he follow his ancestors’ instructions and keep her close as his most powerful “weapon,” or let her go and become her own “person,” even if it means they will be parted forever?