Kaison inherits a magical halberd from his family the day they are murdered. He must infiltrate Sun Castle to uncover the secrets of the halberd but Mortimer, an exiled knight who obtained the magic of the Eclipse, is hunting Kaison for the sacred halberd. Kaison works with his friends, uncovering the labyrinth under the castle and finding the Crimson Teardrop so he can fight Mortimer. However, in order to kill Mortimer, either Kaison or one of his friends must take the power of the Eclipse and become the next dark lord.