After World War I, an expedition representing the Allied countries is sent to Cambodia to stop the efforts of Count Mazovia (Roy D'Arcy) in creating a zombie army of soldiers and laborers. Hoping to prevent a possible outbreak of war due to Mazovia's actions, the group presses through the jungle to Angkor Wat in spite of the perils. The group includes Armand (Dean Jagger) who has his own agenda contrary to the group's wishes.