Genghis Khan--the bloodiest warlord in history--sweeps south from Mongolia into China and creates a mighty empire. He leaves 40 million dead bodies in his wake. But a greater killer stalks Mankind--the Plague. Traveling along Mongol trade routes, the disease wreaks havoc in Asia and Europe--the greatest biological disaster in history. But the Americas are unaffected. Here, civilizations flourish in isolation. Gold from Africa kickstarts the rebirth of Europe. Money flows into Venice--creating new opportunities for entrepreneurs willing to take risks. In China, a new weapon--the gun--allows a peasant uprising to unify the country. Chinese innovations inspire Europe--leading to the printing press. Millions of books are printed. One of them will inspire a journey to the New World. America beckons.