World War II. On the island of Mindanao, the Philippines, a man calling himself General Fertig has set himself up as a guerrilla leader to harass the Japanese. Army records show that the only officer named Fertig in the Philippines is a reserve lieutenant colonel of the Corps of Engineers, reported MIA on Luzon. Still, the reports filtering out are interesting, and its Marine Lieutenant Ken McCoys mission to sneak behind the lines and find out if Fertig is for real. With McCoy is a motley group put together as a compromise between the warring factions of Douglas MacArthur and the OSS chief Bill Donovan.Together, McCoy and his men steal into the heart of enemy territory and there, amid firefights and jungle camps, encounter more than they had bargained for.