Forensic doctor Jiang Mo died during a mission, and thus traveled back to the body of the daughter of the same name from the ancient Jiangzhou magistrate. Her father was convicted of providing disaster relief and will be executed in the next autumn. The family was in ruins. The two-year-old brother of Shang Yangzi's last words were that he hoped that she would disguise herself as a man and use his identity to go to Beijing to take the exam and find out evidence that her father was wrongly accused, so as to save her father. From then on, Jiang Mo put on men's clothes and embarked on the road to Beijing to take the exam. Along the way, she encountered a murder case. As a forensic doctor in her previous life, she would not stand by and watch, so she checked many clues along the way. The closer she got to the truth, the closer she was to danger. Fortunately, there was a mysterious figure who kept protecting her, so she was able to find out the truth of the matter and give justice to her father, Jiang Lixian...