Jiang Haoze, a student at the police academy, died in an accident while protecting the victims during an accidental rescue operation. At the same time, criminal detective Gu Yunxi also died in the line of duty while hunting down heinous criminals.
Miraculously, Gu Yunxi's soul did not dissipate. At the moment Jiang Haoze's life disappeared, the two had a wonderful connection. Gu Yunxi's soul possessed Jiang Haoze's body, allowing him to be "resurrected" in a special "double soul" state.
The "new" Jiang Haoze, who has the knowledge of the police academy, the rich experience of criminal investigation and strong reasoning ability, has re-entered the world full of fog with dual memories and skills.
On campus, under the seemingly peaceful daily life, there are many unsolved cases hidden: mysterious missing students, mysterious symbols appearing in corners of the campus, clues to old cases that have been dusted for many years are looming... Outside the school, serial murders occur frequently, strange scenes, and tricky evidence challenge the limits of detection.
Jiang Haoze (Gu Yunxi) relies on the advantage of the fusion of two souls to shuttle between campus and crime scenes. Using his identity as a police academy student as a cover, he uses his professional skills as a criminal detective to dig out clues from subtle details, deduce the truth in difficult situations, and engage in a game of wisdom with dark forces and cunning criminals.
Every case solved is a wonderful process of collaboration between two souls. Jiang Haoze's youthful vigor and Gu Yunxi's maturity and ability complement each other. While solving the mystery, they also explore the meaning of the coexistence of souls, writing a magical case-solving legend that spans life and death and join forces to pursue the murderer, allowing the light of justice to penetrate the heavy fog.
