In the last moments of World War II, a secret Nazi space program evaded destruction by fleeing to the Dark Side of the Moon. During 70 years of utter secrecy, the Nazis construct a gigantic space fortress with a massive armada of flying saucers.
Seven years since the Monsterpocalypse began, Joel Dawson has been living underground in order to survive. But after reconnecting over radio with his high school girlfriend Aimee, Joel decides to venture out to reunite with her, despite all the dangerous monsters that stand in his way.