The night before graduating from college, his girlfriend suddenly committed suicide by jumping off a building. He began to lose hope in life, but still joined an expedition team to conduct a thrilling and terrifying expedition to the mysterious area in southwest China, and began his unknown pursuit. However, even the expedition team didn't know that they were entering a "death zone" that had disappeared for many years, where all kinds of strange things came and went, good and bad, and death threatened them all the time. The desire to survive suddenly began to inspire him...