In Shanghai's French Concession, which fell in 1941, the military's ace agent "Silver Fox" You Yongzhi was ordered to seize the Japanese top-secret document "Black Hawk Project", but during the operation he was intercepted and killed by a mysterious cheongsam woman named Luo Xiaofang. The two were forced to cooperate amidst gunfire on the Paramount dance floor and discovered that each other was carrying forged joint tokens. When the Japanese military police armored vehicle crushed the glass door, the old enemies had to hold the same Browning to escape. The wanted order from the patrol room in the concession, the monitoring network of the Special High School Division, and the shadow of a traitor within the military command trapped the two in an intelligence puzzle where it is difficult to distinguish between true and false. And the document with the names of thirty-seven generals written in invisible ink is leading them to the underground vault that will change the balance of war...
