Its the 21st Century, Mankind has reached new heights in advancement but cannibalism is still persistent in the form of Terror. Terror Terrain is all about inhuman terrorists who are holding peace and liberty at ransom for their selfish motives & interests. You play flight lieutenant Arthur Anderson, captain of the 4th Division of the Anti-Terrorism Unit in the National Defence. There are three dangerous missions based on difficult geographies across the world. Your marines are taken hostage.