The paths of one evil god, two rival empires, three unlikely bishops and seven brave ghosts converge in the destiny of Teito Klein, a boy who vows to master a powerful artifact known as the Eye of Mikael in order to lay bare the secrets of the world's--and his own--murky past.

In a gambit to steal the power of the Eye of Mikael, a force that has helped the Seven Ghosts keep evil at bay for centuries, the Barsburg Empire sends a most unlikely pursuer to the Barsburg Church after Teito--his best friend Mikage.