Based on Frank Miller's latest graphic novel Xerxes, and told in the breathtaking visual style of the blockbuster "300," this new chapter of the epic saga takes the action to a fresh battlefield-on the sea-as Greek general Themistokles attempts to unite all of Greece by leading the charge that will change the course of the war. This film pits Themistokles against the massive invading Persian forces led by mortal-turned-god Xerxes, and Artemesia, vengeful commander of the Persian navy.