Friday, October 4th, 1957. Scientists from the Soviet Union successfully launch Sputnik 1, a Soviet satellite up into space. It's the first man made satellite that has successfully entered orbit, triggering the Space Race between the United States and the USSR. Countries from around the world fill their tabloids with news related to the success of the Soviet scientists, dubbing the event as a "modern marvel of scientific ingenuity". What the Soviets failed to mention however, is that Sputnik was not just a satellite, but a ship carrying Soviet military personnel, scientists and building architects to the Earth's moon to build a secret nuclear lunar base. Should the Soviets successfully complete the nuclear base, they will control the world with the power to launch nuclear weapons at any target on Earth. Young Air Force recruit Adam Anderson is one of ten air force crewmen who are selected to participate in this secret mission to the moon. When they land on the moon, they find that the Soviet base is half built, but severely damaged by what looks to be gunfire and explosions.

Along with several Soviet cosmonaut suits in the buildings and on the lunar surface, floating around the buildings with no bodies in them and with a strange purple slime substance attached to their space suits and face shields. The American forces search the building grounds but find no secret plans for the nuclear base, nor anyone alive. With their direct orders to find the secret Soviet documents, the men embark on a lunar mission to retrieve the Soviet documents. Unbeknown to the Americans though, something from a different world watches them from the shadows of the dark side of the moon. Camouflaged by the empty dark void of space and with cruel intention, it looks to make the young men its next victims. The fate of the group will depend on how fast they can retrieve the secret Soviet nuclear documents, decimate the base, and most of all, if they can survive the creature that hunts them hiding in the darkness of the dark side of the moon.