With the death of the fearsome Ögedei Khan, the Mongol invasion of the West has been brought to an abrupt halt. The defenders, a band of brave warrior monks known as the Shield-Brethren, limp homeward again across a frozen, bloodied wasteland. But where - and what - is "home" now that the threat of invasion no longer shapes their lives?

Thirteenth-century Europe has been saved from annihilation at the hands of the Mongols, to be sure, but new and terrible threats are at hand: political and religious turmoil threaten to turn the warriors' world upside down once more. Painted against a rich backdrop of medieval mysticism and Russian folklore, Katabasis weaves together the tales of victor and victim alike in a fearless exploration of what it means not just to survive, but to truly live again.