The supernatural invades, turning the human world into a living hell. Ghosts cannot be killed, and only spirit masters can stand against them. Tang Ji, an ordinary young man, buys flowers for the girl he has secretly loved for ten years, only to encounter a heart-ripping ghost and die horribly after his heart is torn out. By a twist of fate, the Book of Life and Death recognizes him as its master. He returns to life in another body and prolongs his existence by accumulating Yin energy, awakening Ox-Head and Horse-Face, capturing evil spirits, and rescuing an innocent mother and daughter. From then on, he gradually forms contracts with the gods and spirits of Chinese mythology: the Black and White Impermanence, the Day and Night Wandering Gods, the Four Great Judges, and the City God and King of Hell. Years later, while others contract heroic spirits and powerful ghosts, he stands above the clouds and looks down upon all beings: "You contract with ghosts, but I contract with gods."