In 1940, on an isolated island in Shanghai, various forces were intertwined and undercurrents were surging. Jiang Nian is the most inconspicuous file clerk in the Secret Service. He is taciturn and obedient, and is a "good guy" who can be bullied by everyone. However, under this cowardly skin, his true identity as a multiple spy is hidden - he is not only a backbone placed by the military commander in the Secret Service, but he is also inextricably linked to the underground party.
His immediate boss, Shen Mo, the leader of the Secret Service Operation Team, is cold, suspicious, and ruthless. He is the biggest obstacle to Jiang Nian's hidden path. Jiang Nian always thought that he was playing against a talented opponent. It wasn't until a life-and-death confrontation that Jiang Nian was shocked to discover that Shen Mo turned out to be a reborn person!
Shen Mo brought the memories of his previous life and knew the future intelligence network and lurkers very well. When he was reborn, his only goal was to uproot all the lurkers, and Jiang Nian was the top target on his list.
Facing a reborn villain who knew everything and was pressing every step of the way, all Jiang Nian's plans and calculations turned into a joke. Before Shen Mo's butcher's knife falls, he must use his identity as a double agent to walk a tightrope between the military command, the underground party and the Secret Service, and weave a big lie that can deceive the reborn. This is a lonely battle of humiliation and humiliation, and it is also a peak showdown of IQ and prediction.