Meng Yao (Huang Wei), a single mother who is a live webcast, took her kindergarten daughter Wen Wen into a cheap school district. However, the strange atmosphere in the house and the strange stench from time to time made Meng Yao feeling anxious. One night, Wen Wen actually played the "disc fairy" game left by the former tenant in her sleepwalking.

Northern China, 2004. When miner Zhang Baomin returns to his home, a small and isolated mining village, his wife tells him that their son has mysteriously disappeared while shepherding his small flock.