Story background: 1941, Shanghai. In the last dark night of the isolation period, the Wang Puppet Secret Service Headquarters "No. 76" And the Japanese secret service "Mei Agency" joined forces to launch a frantic search for the CCP underground party lurking in Shanghai. An agent codenamed "Shadow" was ordered to sneak into the heart of the enemy when the organization suffered heavy losses, and launched a thrilling life-and-death game.
