Japan, 1542--a country in turmoil. The last shogunate has collapsed, leaving a nation divided into numerous factions, each led by a daimyo (feudal warlord). Each daimyo is out to scheme, murder, and wage war to become supreme ruler. The emperor is powerless--a puppet of whichever faction controls Kyoto. Into this melting pot come the first European explorers, bringing guns, religion--and disease. Out of this chaos will emerge only one daimyo who will master all the varied skills that make up the art of war: politics, economics, subterfuge, strategic warfare, and battlefield tactics. Only one will become shogun.