[1] It focuses mainly on the Mongol invasion of Islamic Central Asia, the war against Shah Muhammad II of Khwarezm and his son Jalal ad-Din Mingburnu and the brutal massacres at Urgench and Merv.

Genghis Khan, powerful leader of a nation united from the tribes, is victorious in the long war against the Chin, the Mongolians' ancient foe.

Now trouble arises from another direction: his embassies to the west are rebuffed, his ambassadors murdered.

The nation must embark on its greatest journey, through present day Iran and Iraq, to the edges of India.

They face enemies as powerful and ancient as any they have known and the Khan's path will lead them either to victory or utter destruction.