"When the dark priest Soron threatened to engulf the world in shadow, heroes and wizards alike
rose against him.

All were defeated.

But a lone warrior still stands..."

You play the role of a samurai that must destroy the forces of Soron. You find, however,
that you cannot defeat him alone, so you must find a light mage who will aid you on your
quest, and most importantly, the sacred weapon known as the Samurai Sword.

[From gamefaqs]