The air of celebration surrounding 15-year-old Oz's coming-of-age ceremony quickly turns to horror when he is condemned and thrown into an inescapable prison known as the Abyss. He meets a young girl named Alice, who is not what she seems. Is there some shred of hope for him to grasp on to?
Just when it seems the tragedy of Sablier is on the verge of recurring at Isla Yura's residence, the sinister blade of the Headhunter swings once more. From the darkness where the mysteries of Fianna's House and Humpty Dumpty converge, one truth will come to light: an unmoving reality that is itself so shocking, it seems like an illusion...Will Oz and his allies ever recover?