Fifteen year old Reagan Eckstein has been living with epilepsy for most of his young life. He'll tell you it's like living between two worlds, being dragged from one to the next without warning. But when Reagan stumbles upon a crystal prism lying in the mud and sets it on his bedroom windowsill, he quickly learns that the prism is more than a rainbow thrower. Just beyond the light is the heavenly land of Teshran, a land of talking beasts, and creatures neither human, nor animal, but Divine. It is a dawning world, a place that has never seen night, or death, or injustice, until Reagan writes the first chapter of its history the day he meets an illuminated hare called Nigril, who promises a cure for Reagan's disease. But when Teshran is plunged into darkness by the warlock's enchantment, it becomes a world subject to the same evils as the world of men and one beast who wants Reagan's soul. Desperate to escape Teshran, Reagan follows the land's age-old wisdom and seeks the gryphons for help... What he doesn't yet know is that the gryphons are seeking him. "This is not an obsolete weapon." Aridai commented, correcting Reagan's thought. "It is a spiritual weapon, forged for spiritual warfare. It is older than the world of men; and men fashioned blades after it for their own evil purpose. Go, take My Sword, Aedrhem, from Ruel. See how He fits your hand."