Chen Mo, a young man from the modern era, unexpectedly transmigrates to Jinling in 1937 and becomes a low-ranking Juntong spy. During a mission, his left eye mutates and grants him the ability known as the Eye of Truth, letting him see through disguises and identify spies. Thanks to this power, he stumbles upon a Japanese spy hideout and earns merit, but his low status brings him only a meager reward. Just then, his older sister runs into trouble in Shanghai. Chen Mo accepts a secret mission there, caring for his family while struggling to survive in the world of espionage on the eve of the Battle of Shanghai. From a petty nobody who loves money and fears death to a capable intelligence operative in his own right, Chen Mo uses his eyes to see through disguises and protect his loved ones, carving out a path through the chaos of war.
