Based on the true story of former-USSR's failed attempt to obtain the secrets of Chinese civil defense underground complex near Shanghai, the biggest city of China.
The former-USSR actually did succeed in photograph all of the design blueprints of the civil defense underground complex, but they failed in smuggling the pictures out of China.
The former-USSR actually did succeed in photograph all of the design blueprints of the civil defense underground complex, but they failed in smuggling the pictures out of China.