Returning youth Gao Xiaojun comes back to Baiyang Village and encounters the village chief election, where the pigs in his household unusually rush out of the pigpen, unexpectedly uncovering hidden environmental hazards in the local groundwater and land. He and villagers like Tang Bin and Liu Guixiang follow the clues left by the pigs, step by step sorting out past lingering problems. Everyone insists on seeking truth from facts, collects evidence, resists the temptation of benefits, and publicizes the true situation. All the villagers unite as one, relying on a public voting method to rationally make a collective choice, guarding their homeland and land, facing historical lingering problems head-on, and jointly seeking a proper resolution to the hometown's environment, showcasing the conscience and collective strength of ordinary rural people.