Zhao Yu used to be a little ruffian who fought recklessly without any morals and bottom line, after being framed and sentenced to a lethal injection death penalty; Zhao Yu woke up reincarnated to a parallel timeline, where he’s no longer a criminal, but a Key Case Investigation Team agent. The change from a criminal to a police officer had thrown Zhao Yu off and had him wreak havoc for the first few days in the station. But with the help of a mysterious “Miracle system,” Zhao Yu was able to embark on a new life where his goal is to solve the unsolvable cases and make amends for his past life’s mistakes.
A lecherous army special task force soldier from 21st-century Hong Kong is selected to travel back in time, choosing to go to the Chinese Warring States Period. Unfortunately, the time machine runs into an error during the experiment. With no foreseeable way to return to the present, he must use his combat skills and knowledge of history to thrive in his new life in the year 251 BC.