Buried in the potter's field for three hundred years, the wronged ghost under the pagoda tree, An Huai, returns to the capital by borrowing the body of the marquis's legitimate daughter. Originally intending to settle old grievances, she is instead bound by a substitute marriage contract to the capital-renowned "Living Hades" - the Third Prince, Jin Chaoyan. He is a cold-faced fierce god who fought his way back from a mountain of corpses and a sea of blood, exclusively handling the capital's bizarre and suspenseful cases, never believing in ghosts and deities, yet unwittingly stirred by her cold nether aura. She came with three hundred years of resentment, originally intending to drink the world's dead Qi to nourish her soul spirit, but instead develops a yearning for the burning human warmth within his embrace. Bizarre murder cases unfold one after the other; the two of them—one investigating cases, the other seeking revenge—go from being at loggerheads to entering the game side by side.