A mysterious accident and the discovery of a long-forgotten skeleton connect two young people. Together, they team up with the police to uncover the city's hidden past and solve a web of dark secrets.

Three years ago, math prodigy Rao Yuci was framed by her best friend, Bai Liangliang, and sent to a treatment center. While Rao Yuci lost everything, Bai Liangliang climbed the corporate ladder. Now, fully recovered, Rao Yuci is determined to expose Bai Liangliang's deceit and make her pay for the betrayal.

Getting inside the head of a violent criminal is not easy. But Simon Bo, a brilliant criminal psychologist, has the ability to get into the minds of even the most mysterious and violent criminals. He’s a professor at The University of Maryland and works as an analyst and advisor on the police department’s most violent or difficult cases. With the help of his young assistant, Jenny Jian, Simon delves into the thoughts and intentions of the criminal mind. As the daughter of a veteran police investigator with a deep sense of justice, can Jenny help Simon open up emotionally as they work together to solve crimes?