As a tunnel that has been under construction for ten years is about to be completed, affected by global geological changes, a series of geological disasters such as ground fissures, earthquakes, landslides, and mud-rock flows are roaring in. The tunnel and the entire county are in danger. "Old Hong" Hong Yunbing (played by Huang Zhizhong) and "Little Hong" Hong Yizhou (played by Zhu Yilong), father and son, step forward in the desperate situation. How do they and 160,000 people survive this life-and-death crisis?