Teito is imprisoned in an icy tomb with a strange girl who seems to be a part of his past, and in order to survive, he must discover Labrador's past secrets.
Teito sets out for the Land of Seele with Frau, and learns about the past history of the puppet master Castor as well as discovering parts of his own murky past.
Teito must complete the Bishop examination to be granted travel privileges to find and reclaim the Eye of Mikael, when he comes face to face with his greatest adversary, Ayanami.
While Teito trains rigorously to pass the Bishop Examination and gain worldwide travel privileges, a crime perpetrated by one of Ayanami's henchmen rocks the Barsburg Church.
Teito has regained his memories of hosting the Eye of Mikhail, a powerful artifact that has helped the Seven Ghosts keep the evil god Verloren at bay for thousands of years.
Frau, Teito, and the Seven Ghost Ea are the only ones left standing in the way of Seven Ghost Landkarte and his dark desire to eradicate all sin by erasing humanity.
Brainwashed into believing he is Ayanami's servant, Teito prepares to attend Princess Ouka's sixteenth birthday party as her bodyguard, where the Seven Ghosts plan to free him from Ayanami's clutches.
Using the military's laboratory, the Black Hawks plan to brainwash Teito into giving the evil death god Verloren tangible form, but when he finds the grave of his best friend, Teito begins to remember his true past.