After narrowly escaping a battle with Lorenzo, Johanna falls unconscious. In her wounded state, the century-old memories of her first contract with Mephistopheles run through her head. In these memories are answers Marion is beginning to understand: what is the nature of his master’s immortality, and how is her curse inextricably tied to the body of her demon? Faust, Marion, and Nico’s immediate aim is to find Mephisto’s right leg, a mission that becomes more urgent when evidence of a young girl using demonic power comes to light. To find the next piece of her precious demon, Johanna may even need to form a tenuous deal with Lorenzo…