Mason Albrecht's anger issues have finally come to a head, attracting another member of the Seven. The Prince of Wrath reveals his hand, striking at Mason where it hurts the most: his mother. Abaddon possesses Josephine Albrecht's body, then disappears, taking her with him.

Plunged into despair, Mason and his allies rush to find Abaddon, and a way to stop the Prince of Wrath. How can he destroy the demon hiding inside his mother's body? Mason must swallow his pride, bare his soul, and beseech old friends and enemies... one of the Seven among them.