In 480 B.C, during the Greco-Persian Wars the Persian Empire led by Xerxes I of Persia fought the Greek city-states forces at the pass of Thermopylae in central Greece.
The only thing stopping the Persians was an army led by King Leonidas I and his 300 Spartans, considered by many to be the greatest soldiers the world has ever known.
The film also focuses on the lead up to the Battle of Thermopylae revealing that the Greeks might have played a part in the Ionian Revolts in Asia Minor in 499 to 493 B.C.
Mechanism Digital, one of New York's largest 3D animation studios, produces a large amount of in-show programming for The History Channel, Discovery Channel, and National Geographic, as well as show opens and graphics packages.
In order to present the original topography of Thermopylae as accurately as possible and to recreate the combat experience, Mechanism shot people on green screen and placed them into various CG environments such as the Pass of Thermopylae, Athens, water, and more.