The film was set in (1914-1918), which is rare for a Japanese movie. Based on the real . the story is about a group of young pilots of the led a task team to destroyed the Germans communication posts, ammunition depots, and air-aircraft defenses, making way the Allied forces to captured the port city. These men were part of Japan's first naval aviator corp. In overseas countries like and the , it was released under the title "Siege of Fort Bismarck."