In 1938, the neon lights of the French Concession in Shanghai hid a deadly trap. When Lu Chen, the ace agent of the military reunification, was executing the "Scorpion Catching Plan", he was betrayed by a traitor and fell into tight siege. When he was on the verge of death, he accidentally awakened the "time hourglass" ability - which can trace his consciousness back to the key node ten minutes ago. With this secret weapon, he transformed into a chess player walking on the edge of a knife: in the torture room of Japan's Special High School, he used three times of retrieval to see through the flaws in torture; at the cocktail party of Wang's Puppet Government, he intercepted the assassination code by time difference; and even in the artillery fire of the Battle of Songhu, he changed the direction of the battle with minute-level deductions.
But he soon discovered that each time he went back would consume his life source, and the "ghost organization" hiding in the dark was not only hunting him, but also coveting the shocking secret behind the hourglass ability. When the military commander's suspicion, the underground party's temptation, and the Japanese army's hunting came at the same time, Lu Chen clenched his hot pocket watch: "This time, I will make all betrayers and invaders fall into the cage of time!"