In the isolated Huangnigang Village, young Dongzi was forced by his cruel grandfather to learn the ancestral "Monkey Brain Banquet" technique since he was a child, and he lived with fear all day long. Once, he secretly fed a thin and lame little monkey in the monkey cage, but he was shocked to find that its eyes were full of spirituality and malice like humans. The death prophecy of the mysterious old monk soon came true - this alien, which is actually a "man-eating monkey", not only has superior intelligence and can imitate people to open locks, but also quietly grows in tolerance. When it breaks free from its cage and sneaks into the mountains, its revenge begins.
