Welcome to the Kingdom of Argus, an island of the Roman Empire found in a landlocked sea. Having distinguished himself in a naval battle, the warrior named Rygar was presented with a crown by the King of Argus's daughter, Princess Harmonia. Suddenly, a horde of fierce monsters brutally interrupted the ceremony. After massacring the guards, the monsters cast Rygar into a chasm and kidnapped the Princess. As he lay at the bottom of the chasm, a mysterious voice brought the warrior back to his senses. It was then that he received the Diskarmor, a powerful fighting shield forged by the gods. Rygar raised himself up, the Diskarmor in hand, and swore to exact revenge on these creatures of the shadows known as the 'Titans'. A legendary hero, a princess in need of rescue, hordes of enemies straight out of Greek mythology (cyclops, minotaurs, chimera, etc.), a weapon with unprecedented magic powers... these are the main ingredients in this latest epic odyssey.