In a post-apocalyptic world where Earth has been devastated by a nuclear war, a group of heroes dare to venture into the perilous Hollow Earth. There, they must confront an ancient shapeshifting reptilian race known as the Vril and their army of dinosaurs. With the Moonbase being the last refuge for the survival of mankind, our heroes are in a race against time to save the last remnants of humanity while battling the ultimate enemy of all existence.