At the Heishigou Miner's New Village, miner team leader Sun Dehai brings a pregnant He Qiaoyun home, publicly claiming she is the widow of rescue hero Liu Tiejun. Everyone laughs at Zhao Yuzhen for struggling to live without her husband, but the seemingly weak Zhao Yuzhen has long harbored suspicions. She secretly collects various types of evidence, arranges for her daughter to verify the prenatal check-up records, and sets up schemes step by step. At the family assembly, she publicly tears open the scam, exposing the corrupt collusion between her husband, Section Chief Feng, and Zheng Guodong. Facing pressure and false accusations from multiple sides, Zhao Yuzhen does not back down, gathers complete materials to submit to the organization, and ultimately the bad guys are punished while she regains her audit-related work.