With her father missing for three years, Xie Maisui also lost her voice for three years. When they were forced to hand over the house, she suddenly spoke up to point out a ledger deficit, discovering that she could hear the secrets hidden in old objects. Facing conspiracies such as hidden ration tickets, filled-in old canals, and missing partners, Maisui held a wooden board step by step to seek evidence, protecting her mother and saving people. But hearing too much made her lose her voice again. At the moment of the flash flood, this mute girl resolutely raised the wooden board, leading the whole village to run toward the water canal buried for three years, stepping out a path to survival in a desperate situation.