Once living a content and secure life, wealthy heiress Ye Shuang (Qin Lan) finds her world turned upside down following the sudden vanishing of her husband Ling Feng (Archie Kao) and their daughter. Seeking advice from her father, Ye Cheng (Simon Yam), Shuang decides to involve the police, leading her to cross paths with her former boyfriend, Yao Jie (Gordon Lam). As Jie delves into the investigation, he uncovers that this high-stakes kidnapping case is shrouded in mystery. Known for his meticulous attention to detail, Jie begins to suspect Cheng as a possible culprit, especially as Cheng’s behavior grows increasingly peculiar. Just when the enigma seems to be unraveling, Cheng dies in an accident. This event coincides with the emergence of evidence linked to a murder case from two decades ago, revealing hidden motives behind the baffling kidnappings.