Su Qingyuan, a modern female forensic doctor, accidentally traveled through time and became the only daughter of Su Qian, an ancient widower. Su Qian was framed as a scapegoat for a "bone case" that shocked both the government and the public, and died unjustly in prison. Qingyuan relied on his knowledge of modern forensic science to discover numerous doubts while burying his father, and vowed to overturn the case. She managed to get close to Lu Yi, the Jinyiwei commander who was ordered to investigate the case. From being initially suspected and tested, she gradually won his trust with her excellent professional ability and became the key to solving the case. The two worked together to not only uncover the real murderer in the fog, but also implicated the court conspiracy behind it. After that, Su Qingyuan was recruited into the Jin Yiwei by Lu Yite, and the two became the best partners. They repeatedly solved strange cases in the turbulent power struggle, trusted each other's back and sincerity, and finally worked side by side to spend a lifetime together.
