The story line, although in fiction, was set in the last days of the Second World War in the Philippines, particularly the Bessang Pass in the island of Luzon. The combined Filipino and American military forces are having a hard time in defeating the Japanese Imperial Army. Because of this situation, many military personnel and civilians on the side of the Filipino and Americans caught between the opposing forces are dying in large numbers everyday. Equipment and logistics in large quantities are also lost during the same time. The top brass of the United States Armed Forces in the Far East (USAFFE) decided to select six Filipinos from various several guerrilla units under its command to execute a mission codenamed “Mission X-310”: