College student Qi Yao’s roommate, Li Zhanyan, takes a face-swap photo with a thousand-year-old female corpse in a museum and posts it online, ignoring Qi Yao’s warnings. Afterwards, Li loses weight rapidly, her appearance deteriorating while the corpse oddly gains vitality and a matching mole. Qi Yao suspects Li is being possessed. She contacts an online user, “Misfortune Dispeller,” who turns out to be undercover policeman Zhou Heng, investigating a related case. He reveals that Li also swapped Qi Yao’s face with the corpse, marking her as the next target. Li becomes increasingly deranged, attacking people and attempting to take over Qi Yao’s body in the dorm, but is subdued by Zhou. Police discover Li secretly filmed thousands of private photos of women and sold them on the dark web. The truth emerges: Li has terminal cancer; the physical changes stem from chemotherapy, not possession. Desperate for money, she faked supernatural events. Li is sentenced, and Qi Yao helps her seek social assistance but refus
