Zhuang Ziqiao (played by Ruco Chan) and Zhang Xinyue (played by Mandy Wong) are childhood friends. Because of the crimes committed by their fathers, they embarked on completely different paths. After her father was imprisoned, Yue changed her name and surname, hoping to start a new life. Even after getting married and having a daughter, she never mentioned her past. Qiao regarded her father as a negative example and vowed not to repeat the mistakes of the previous generation. She chose to be an insurance investigator as her career. The two had not seen each other for a long time, but they met again because of a life insurance policy of 10 million yuan. Yue's husband Yan Haoran died in an accident. Yan increased the insurance amount a few months ago. Before the accident, she learned about Yue's life experience, which made Qiao suspect that it was not an accident...Yan's mother also had doubts about Yue, so she asked policewoman Yang Xinxiao (played by Roxanne Tong) for help. Xiao revealed Yue and Qiao's life experience. It turned out that Xiao was one of the victims of the case that year. At this time, another death occurred...Although mistakes have happened, as long as you find the hidden door, there must be a way out.