The survivors are left picking up the pieces in the aftermath of the attack on the STN-J. With both Robin and Amon missing, the Team is seriously short-handed. Even Dojima is pressed into service as a Hunter. Try as they might, though, the strain is taking its toll. And still the question remains: what did the invaders want?

As Robin's powers grow, she wrestles with her old beliefs of what a Witch is. Meanwhile, Solomon Headquarters sends a powerful Hunter named Corneli after Robin. Will the secretive Amon help her this time, or will he allow Cornell to destroy her?

With Karasuma captured by the Factory, the team mobilizes to rescue her from an uncertain faith. They secretly gather to form a plan for the dangerous mission, one where they must not only get past Zaizen's watchful eye and armed guards, but also navigate a labyrinth of rooms and corridors. As Robin works with the team, though, the Factory Researcher's words haunt her. Why did he call her the ""Devil's Child""?