No, there really isn't much real story at all. (SPOILER)You eventually find out that an evil entity just known as the 'Dark King' is trying to destroy the world.

That's all. The game should really be played just for it's interesting dungeons, which if I were to actually critique the game, would be it's only redeeming factor (along with the soundtrack which was okay).

Oh, and

(SPOILER)you can kill the final boss with Cure and Life spells. Have fun.