At the time of the downturn in the film and television industry, Yiping Film and Television Company launched an innovative "live caving reality show". The well-known actor Li Kaixuan and several amateurs went to explore the cave, but horror and suspenseful strange things happened one after another, and they were trapped by a trap set by a mysterious person. After they have experienced the test of humanity and the baptism of their hearts, the terrifying truth slowly emerges.