As a newly graduated film police officer, Liu Yang was accidentally attacked and killed by terrorists in a terrorist activity. He thought his good years would be over, but instead he was an ordinary policeman in the Republic of China.
And accidentally discovered a way to travel back and forth between the Republic of China and modern society, using modern technology to solve cases in the Republic of China, using field investigations in the Republic of China to collect evidence that is beneficial to modern times, and solving strange cases one after another.
