Traveling through time and becoming a death row prisoner in the Qin Dynasty, the car is about to break apart on the execution ground.
Lin Hao, a top student in modern law, relied on his insight into Qin's laws to escape from death. However, he fell into a more dangerous chess game - he became a sharp sword in the hands of Qin Shihuang Ying Zheng, pointing at the empire's stubborn diseases.
Investigate ordnance, eliminate corruption, and solve mysterious cases. He uses modern criminal investigation techniques to walk on the blade of the strict Qin law. Li Si regarded him as a thorn in his side, Zhao Gao used him as a chess piece, and Mengshi used and defended him. He witnessed the flames of burning books and the tragedy of enforcing Confucianism. In the crack between law and imperial power, he tried to find a way out for the empire that was about to overthrow.
However, the emperor's star is swaying, and the sand dune conspiracy envelopes the world. When the net is closed and the sword bites back, can he, the chess piece, find his own way out in the end of the empire?
This is a life-and-death game in which the law is used as a weapon against the entire era.
