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 artefact known as the Eye of Mikael in order to lay bare the secrets of the world's - and his own - murky past.

Years ago, the Seven Ghost Landkarte succumbed to a dark desire to eradicate all sin by erasing humanity. His plan has run unchecked for years, and now Frau, Teito and fellow Seven Ghost Ea are the only ones left standing in his way. If Teito hopes to continue on his journey to seal the evil god Verloren, then he'll have to find a way to forgive even this most irredeemable of souls