In his previous life, he was an undercover police officer named O. He worked undercover in the gangster society "He Lian Sheng" for 4 years and mastered a large amount of criminal evidence. However, his identity was exposed on the eve of the arrest and he was hunted by the gang. After escaping, the chain of evidence was cut off by an insider, and his success fell short. He died in an "accidental" car accident at the age of 34 - in fact, he was silenced by the black chain.
The outcome of his previous life made him realize that it is not enough to catch thieves with passion alone. He must grasp power and stand in a higher position in order to truly eradicate the black chain.
The system was activated at the moment of death, transporting him back to June 1995 - just three months into the undercover mission.
