Opening one's eyes, only five days remain until the village-destroying flash flood! Jiang Che sees through his uncle's scheming to seize the house, smoothly sells off the grey-brick and tile house, and takes his mother and younger sister to fall back and guard the ancient stone watchtower. Buying grain and salt and building defenses, everyone around mocks him as insane. The flash flood pours down, the village is annihilated, and jackals lurk. He and his partners use the watchtower as a fortress, playing a desperate game of life and death against greedy villains to survive in a desperate situation.