An ancient alien artifact: the Chintamani stone, its otherworldly place of origin alleged to be the Sirius Star system. It’s said to contain astonishing properties and power so incredible and so dangerous that, much like the Spear of Destiny, Holy Grail and Philosopher’s Stone, whoever possessed this extraterrestrial artifact would have the power to rule the world and gain immortality. Legend says its hidden deep inside the hollow earth, but do historical events suggest otherwise?