This classical peplum tells a fictitious story set in 490 BC, the time of the Medic Wars during which Persian armies sweep the Ancient world. Having brought home to Athens the Olympic victor's laurel crown, Philippides joins as commander the Sacred Guard, which is expected to defend the city-state's liberty, a year after the chasing of the tyrant Hippias. Athenian supporters of Hippias conspire, hoping to side Philippides by marriage to Theocrites' expensive servant Charis, and thus neutralize the guard. She fails to seduce him, as his heart is already taken by a young girl before the learns her name is Andromeda, daughter of Creuso. Everything personal is likely to be put on hold when the news breaks that the Persian King of kings Darius's vast army is marching on Greece, hoping its internal division will make its conquest a walk-over. Theocrites reproaches Miltiades to hold back the sacred guard to defend the Pallas temple after a likely defeat...