No matter what it takes, I'm going to save you. After defeating Petelgeuse Romanée-Conti, the Witch Cult's Sin Archbishop of Sloth, Natsuki Subaru reunited with Emilia. The two had finally solved their bitter quarrel and reconciliated, but that was only the beginning of a new tempestuous chapter. A threat beyond anything he has ever imagined and a ruthless reality lie in wait. Once again, the boy must strive to confront his cruel destiny.