Shen Yan, a young man from Qingya Village, steadfastly guards the Dongpo shelterbelt, deeply aware that this forestland is the village's geological safety barrier. Investor Zhao Kai forcefully cuts down the forest for agricultural greenhouse development, ignoring Shen Yan's landslide warnings, which ultimately triggers a catastrophic mudslide that destroys the project and endangers the safety of the entire village. In a moment of crisis, Shen Yan steps forward, leading the villagers to build retaining walls, dredge trenches, and replant the shelterbelt. Using three lines of defense to withstand the rainstorm, he protects the village home and proves that protecting the mountain is protecting the home, and that the ecological foundation is the fundamental basis for rural development.