Antique restorer Ning Ruchu has the supernatural ability to read the memories of objects through touch, but it also makes him the target of a mysterious organization. Mu Rongjing, CEO of a technology conglomerate, rescues him and reveals his own secret: a dangerous Dark Night Envoy is sealed inside him. Ten years ago, when his parents were murdered, Ning Ruchu's father saved him.
The two are forced to embark on a journey to find the legendary eight Netherworld Key daggers. Each dagger represents an extreme emotion, and can only be obtained by passing its guardian's test. As Ning Ruchu collects the daggers, his abilities grow stronger, but his memories begin to fade. Meanwhile, Mu Rongjing's Dark Night Envoy gradually slips out of control.
Behind it all, the mysterious woman Su Yufei is manipulating events. Her true aim is to resurrect the six people in a crystal coffin, including Ning Ruchu's mother. But an even greater mystery emerges: Su Yufei is only a pawn. Who is the real mastermind, and what is the plan to open the Netherworld?
When life and death hang in the balance, which way will the scales tip between love and responsibility?
