In the famous Battle of Marathon, the Greek hero Themistocles (Sullivan Stapleton) shot and killed the Persian King Darius, which laid the seeds for the return of Xerxes I (Rodrigo Santoro). Under the instigation of Artemisia (Eva Green), the commander-in-chief of the Persian navy, Xerxes led his army to fight the Spartan leader Leonidas (Gerard Butler) and his 300 warriors in the Thermopylae. On the other side, the powerful naval forces commanded by Artemisia approached Athens on the other side of the Aegean Sea. At the critical moment of prestige, Themistocles stood up again and fought against the black goddess with the blood of revenge in her body with the Greek warriors to defend freedom. The clouds were rolling, the waves were surging, and the most cruel killing took place in a distant era...