The movie is based on the 1998 comic series of the same name. It is a fictionalized retelling of the during the Persian Wars. King Leonidas of Sparta leads a tiny army of 300 elite warriors into a hopeless battle against the massive Persian "God-King" Xerxes and his army of over 100,000 soldiers. The film focuses on themes of courage, sacrifice, and freedom, culminating in a fierce stand where the Spartans prove their warrior nature. Where to Watch 300 (300 Spartans) Officially