Secret-service agent Vic Davis is on his way to pick up his estranged son, Sean, from his college campus when he finds himself in the middle of a high-stakes terrorist operation. His son's friend Erin Walton, the daughter of Supreme Court Justice Walton is the target, and this armed faction will stop at nothing to kidnap her and use her as leverage for a pending landmark legal case.

29 years after the events of Iron Sky, the former Nazi Moonbase has become the last refuge of mankind. Earth was devastated by a nuclear war, but buried deep under the wasteland lies a power that could save the last of humanity - or destroy it once and for all. An old enemy leads our heroes on an adventure into the Hollow Earth. To save humanity, they must battle the Vril, an ancient shapeshifting reptilian race, and their army of dinosaurs.