Based on the graphic novel by Frank Miller, 300 tells the legendary story of King Leonidas and his 300 Spartan warriors as they make a heroic stand against the massive invading Persian army led by King Xerxes. Facing overwhelming odds at the Battle of Thermopylae, the Spartans fight to defend their homeland and inspire all of Greece to unite against a common enemy. Story & Themes: 300 is a visually striking retelling of one of history’s most famous battles, blending stylized action with mythic s