Follows the story of underground workers who risked their lives to send intelligence and defend the motherland, set after Japan's attack on Pearl Harbor when the Wang Jingwei regime declared war on Britain and the U.S.

The historical story of an enemy fighting the wits and courage of an extraordinary brave group of ordinary heroes known as the "Lunan Railway Brigade" who desperately fight to defend their homeland.

On the evening of March 19, 1942, a plane carrying believers landed at Yangon Airport. However, the airport had been occupied by the Japanese army. As the believer's mission was to deliver a top-secret plan, the authorities panic when they get a telegram saying that the plane has been shot down.

During the 1944 Japanese occupation of Hong Kong, a Communist-led guerrilla squad and an undercover operative must unite their conflicting missions to rescue a downed Flying Tigers pilot, James, successfully breaking through an intense Japanese siege to secure his escape.

A sequel to the spy thriller Red Silk.