Shen Zhaotang, a papermaker, was involved in a bizarre murder case because he was making paper figurines for people who had died. He accidentally awakened the remnant soul of Gu Yanzhi, a young man from an aristocratic family who died unjustly. The two formed a soul contract using the method of "borrowing life from a paper man". Shen Zhaotang used his ancestral paper-making skills to solve supernatural mysteries such as evil spirits in haunted houses and ghost marriages. Gu Yanzhi relied on his experience in solving cases during his lifetime to uncover the truth about his own death. In the process, the two people separated by yin and yang went from using each other to secretly falling in love, but when they got to the core of the massacre that year, they faced the ultimate choice between "the soul was scattered" and "the yin and yang are separated forever" - should they keep the remaining soul together, or let Gu Yanzhi enter reincarnation? Shen Zhaotang used paper-tying skills to reverse the book of life and death, and used the last paper lantern to illuminate his path to rebirth, but he himself turned into paper ashes before dawn...
