In the bustling modern city of Haicheng, renowned entrepreneur Lin Yu dies mysteriously at his villa under bizarre circumstances, with a string of strange characters left beside him. Chen Feng, captain of the criminal investigation squad, quickly takes charge of the case. There are no signs of forced entry, nothing has been stolen, and the case is shrouded in mystery.
As the investigation deepens, Chen Feng discovers an unsent text on Lin Yu's phone that reads "I was wrong." Its recipient, identified only as "M," remains a mystery. Meanwhile, the business rivalry between Lin Yu's company and Xingyao Technology, along with the strange behavior of his personal assistant, Li Yue, makes the case even more baffling. After Li Yue suddenly disappears, an anonymous email reveals Lin Yu's ties to a criminal organization, which also seems to be connected to Xingyao Technology.
Chen Feng pieces together the truth through layers of confusion. The killer turns out to be Qin Yao, Qin Xing's younger sister. Driven by love turned to hatred, she carefully planned the murder to stop Lin Yu's crimes and protect her brother, using Li Yue to create a smokescreen. But no conspiracy can stay hidden forever in the face of justice.
