Against his mother's will, Mark tries to find a way back to the world of the Black Tower in order to save Memo. Meanwhile, Becky tries to find out if the contents of the chronicle really exist or if Mark is suffering from hallucinations.

Mark and Memo hatch out a plan to free Thomas. Becky doesn't suspect a thing, as she is convinced that Mark is imagining everything. Mark's mother also begins to doubt him, and wants him committed to a psychiatric ward.

Mark's mother receives a shocking tip from Bräker about her husband's death. The liberation of his brother from the Horned Ones' mines and the defeat of the Griffin depend solely on Mark's ability to resist the hatred buried deep in his soul.