The story tells the story of a group of ordinary people led by Dao Ge (played by Jordan Chan) and Gao Fei (played by Peng Jingci), who encountered a mutated and bloodthirsty biochemical centipede in a bizarre subway accident. From the initial suspicion and self-protection, they finally worked together to fight the underground monster. The film features a ferocious and weird giant centipede, a treacherous underground cave, and a circular subway falling into the abyss. Everything makes the road to escape full of dangers.