Lu Zhaoyan is the most silent night clerk at the funeral home. He often hears whispers coming from the morgue in the middle of the night, but he never dares to look back. Until that night, a male corpse identified as an unknown corpse suddenly opened his eyes, grabbed his wrist and yelled "Dad" hoarsely - and the face was exactly the same as his adoptive father who had been deceased for three years. At the same time, Xie Linchuan, a mysterious man in a black windbreaker, appeared at the door of the morgue, holding a piece of yellow paper filled with spells between his fingertips, and said coldly: "What you raised is not a human being, but a ghost guarding the tomb." Lu Zhaoyan finally understood that what was hidden in his blood was a blood contract that could connect yin and yang, and Xie Linchuan was here to collect debts.