The story begins with Lin Yu, an ordinary young man in the 21st century, who accidentally traveled to Tokyo in the Northern Song Dynasty. When he first arrived, Lin Yu relied on his modern criminal investigation knowledge to save a fallen scholar who was falsely accused, and thus got acquainted with the intelligent and mysterious Su Yao.
The main conflict is that the powerful officials of the imperial court are fighting for power and profit, planning a series of strange cases to disrupt Tokyo, trying to take the opportunity to eradicate dissidents, and innocent people are trapped in it. In order to protect himself and protect justice, Lin Yu was determined to investigate the truth thoroughly, but was assassinated many times by mysterious forces. Su Yao was also involved, and her life experience became a mystery.
As the investigation deepened and the climax came, Lin Yu discovered that Su Yao was actually a pawn secretly cultivated by the hostile camp, but his feelings had deepened, and he was in a dilemma. In the end, in a thrilling palace confrontation, Lin Yu cleverly used his resourcefulness to expose the conspiracy, resolve the crisis, and bring the real culprit to justice. He gave up his fame and fortune, took Su Yao to live in seclusion, and started a new ordinary and happy life in the Song Dynasty, and restored peace to Tokyo.
