The book is dedicated to the unrivaled scope of the Mongol conquests of the 13th century, when the nomads of Central Asia in a short time took possession of territory that stretched across all of Asia to the borders with Germany and the shores of the Adriatic Sea. The author outlines the documented history of the rise and fall of the great Mongol Empire. Describes Eurasian nomadism, the Mongol invasion of Europe, and the Christian response to it. Gives details of the rule of the Mongols in China and Persia. He paints portraits of their rulers: the great khans, and above all the legendary Genghis Khan, the Mongol rulers of China and the khans of the Golden and White Hordes. The story ends with how the Mongols were stopped at the edge of Europe and driven out of the Middle East.