Modern young man Lu Ming accidentally traveled to the fictional city "Xingang City" with his soul and became the character Tang Yi, an undercover agent deployed by the police for ten years and the core of the "Q of Spades" plan cultivated by the Qinglong Society. After traveling through time, he retained modern memory and military knowledge, but found himself trapped in a "dual identity curse": every attempt to reveal the truth would trigger memory tampering, causing him to constantly doubt whether he was a policeman or a gangster.
