There was once a remarkable civilization that existed on Earth, surpassing modern man in knowledge and scientific advancement. Even today, remnants of this ancient society lie hidden around the globe. With the aid of high-speed communication networks and satellite technology, nations battle to discover and exploit their enigmatic power. In an effort to safeguard these relics from wicked forces, a member of the ancient civilization inscribed a message onto a plate: "Protect our relics from evil-doers." Inspired by this call to action, an organization has set out to permanently conceal the civilization. They are known as the elite and covert Spriggans.