Based on Frank Miller's graphic novel Xerxes, and told in the same breathtaking visual style as Zack Snyder's battle blockbuster 300, this new chapter of the epic saga takes the action to a fresh arena — the sea — as statesman-turned-soldier Themistokles attempts to unite all of Greece by leading the charge that will change the course of the war. This action-adventure epic pits Themistokles against the massive invading Persian forces led by the treacherous god-king Xerxes, and the seductive, vindictive, and ambitious Artemisia, vengeful commander of the Persian navy. Outnumbered, but not outmanoeuvred, the Greek general gambles everything on a daring plan that could seal the fate of his country and the future of democracy. 300's Lena Headey and David Wenham return to join the Spartan resistance, joined by Hans Matheson, in this visually spectacular wartime drama co-written and produced by Zack Snyder.