The 300 Spartans is an account of the 480 B.C. Battle of Thermopylae, in which the Greek Spartan King Leonidis, played by Richard Egan, led a remarkably small number of Greek Sparta to victory over an invading Persian army led by evil King Xerxes that was thought to number over 25,000. This spectacular conflict gave the Grecians enough time to organize a force to ultimately repel the Persians, and thus change the course of Western civilization.

The avaricious Athenian, Fanouris Karababas, forbids his daughter to marry her beloved and behaves cruelly to his wife. But she persuades him that he suffers from a rare disease.

Ms. Byzantiou is a passionate writer who stays at the hotel “Paradise” together with other eccentric tenants. When the friend of a hotel boy, who is planning to marry a young tenant, arrives at the same time with a couple of newlyweds, Ms. Byzantiou is inspired to write about a dramatic love affair.

Francesco, a young Sicilian aristocrat, scars an aging gangster who has set out to take away his property. The gangster vows to obtain vengeance, and Francesco is forced to flee across Greece with his girl friend, pursued by his antagonist's vicious henchmen.

A woman offers shelter to an English officer who arrives at the island of Mykonos under Italian occupation.