The game is sustained in the sci-fi style. Player - a soldier who takes part in "Operation Lord» (Overlord). In a desperate attempt to protect Earth from alien invasion, humans begin a counterattack on the enemys home planet of the Strogg cybernetic civilization (Strogg). Most of the other soldiers were captured or killed, as soon as they entered the atmosphere of the planet. Thus, the player must single-handedly penetrate the Strogg capital city and eventually kill their leader Macron (Makron)