After twenty years of marriage, Qiao Yitong's mother has single-handedly cared for her grandson for eighteen years. Just after her son gets accepted into university, her in-laws suddenly arrive to move in permanently, forcing out the mother-in-law who has worked so hard for the family. Her husband, Zhou Xiaoqiang, has long been plotting behind her back: he is having an affair with his subordinate, He Fangfang, secretly transferring all their marital assets and colluding with his mistress to accept nearly three million yuan in kickbacks. Heartbroken, Qiao Yitong hires a lawyer and gathers comprehensive evidence of the affair, asset transfers, and corruption to defend her rights through legal means. Her son firmly sides with his mother, while the mistress, unable to bear being deceived, hands over incriminating evidence. In the end, Zhou Xiaoqiang loses everything and goes to prison. Qiao Yitong buys a house for her mother, finally breaks free from her unhappy marriage, and lives life on her own terms.