The revenants have finally been freed by the golden water spout. The cathedral is accessible again. Is Cologne finally at peace? Far from it, as the ragpicker is free and seeks revenge. Helena Teufel, along with her colleagues at the Office for Aether Affairs, is searching for the man who continues to operate in Cologne's underworld despite the dismantling of his child gangs. Who is he really, and who are his allies? The atmosphere of uncertainty is fueled by the new mayor. His campaign to protect the good citizens turns into a purgatory for many innocents. Roaming youths make the streets unsafe at night—all in the name of security. When the sacred grove of the witches of Cologne goes up in flames, the violence escalates. Helena and her stallion Lucifer must prove who the real culprit is before lynch justice takes hold.