What if the only way to prevent the Apocalypse is to find a way to kill those who cannot die? Mercenary Captain Ishmael had no idea when he stepped ashore in the port of Safehaven that his mysterious patron would require him to do just that.

Along the way he assembles a team of unlikely heroes: a gardener turned prophet, a runaway barbarian princess, a wizard who only knows one spell, a fierce and furry love-struck warrior of the cat-like Div and a washed up elderly war criminal who shares Ishmael's shadowy past. Together they must discover a way to defeat the Four Horsemen of the Apocalypse.

Through a magical voyage on a flying ship to the Four Corners of the Earth, where even the very gods help or hinder them, they must succeed or the world will end in fire. But will treachery from within bring on the Apocalypse?