Greek general Themistocles of Athens leads the naval charge against invading Persian forces led by mortal-turned-god Xerxes and Artemisia, vengeful commander of the Persian navy.

The rebels gear up for battle against the ruthless forces of the Motherworld as unbreakable bonds are forged, heroes emerge — and legends are made.

When a peaceful colony on the edge of the galaxy finds itself threatened by the armies of the tyrannical Regent Balisarius, they dispatch Kora, a young woman with a mysterious past, to seek out warriors from neighboring planets to help them take a stand.

King Leonidas of Sparta and a force of 300 men fight the Persians at Thermopylae in 480 B.C.

The crown jewel of Her Majesty's Secret Intelligence Service, Agent Lorraine Broughton (Theron) is equal parts spycraft, sensuality and savagery, willing to deploy any of her skills to stay alive on her impossible mission. Sent alone into Berlin to deliver a priceless dossier out of the destabilized city, she partners with embedded station chief David Percival (James McAvoy) to navigate her way through the deadliest game of spies.

After its victory over Leonidas' 300, the Persian Army under the command of Xerxes marches towards the major Greek city-states. The Democratic city of Athens, first on the path of Xerxes' army, bases its strength on its fleet, led by admiral Themistocles. Themistocles is forced to an unwilling alliance with the traditional rival of Athens, oligarchic Sparta whose might lies with its superior infantry troops. But Xerxes still reigns supreme in numbers over sea and land.