As Quanxi and the members of the Special Division battle it out over Denji, the mysterious Santa Claus makes his move. But things are not as they appear, and nobody will be prepared for the darkness and despair about to be unleashed!
Having been forced to kill a friend, Denji finds that his brain has turned to mush from despair. Without the motivation to keep going, he seeks help from Makima. But Makima is not what she appears, and Denji's pain is only just beginning.
