Liu Zixin’s picture-perfect marriage unravels when she uncovers her husband’s infidelity and hidden agenda. Seeking revenge, she hires private investigator Zhang Xiuqi, only to be confronted by Zhou Ping, who reveals that she had an affair with Zhang a year earlier. As Liu grapples with memory loss from a past accident, she begins to suspect Zhang’s true motives, leading her into a complex web of secrets and deception.