The Song Empire has been invaded by its warlike Jurchen neighbours from the north. Half its territory and its historic capital lie in enemy hands; the peasants toil under the burden of the annual tribute demanded by the victors. Meanwhile, on the Mongolian steppe, a disparate nation of great warriors is about to be united by a warlord whose name will endure for eternity: Genghis Khan.

Guo Jing, son of a murdered Song patriot, grew up with Genghis Khan's army. He is humble, loyal, perhaps not altogether wise, and is fated from birth to one day confront an opponent who is the opposite of him in every way: privileged, cunning and flawlessly trained in the martial arts. Guided by his faithful shifus, The Seven Heroes of the South, Guo Jing must return to China - to the Garden of the Drunken Immortals in Jiaxing - to fulfil his destiny.

But in a divided land riven by war and betrayal, his courage and his loyalties will be tested at every turn.