The Soot Sickness.Emilico, reuniting with Mia alongside their squad, is relieved to see her back to her normal self. She learns how aside from their cleaning duties, the primary role of Dolls are to act as their Shadow master's "face". Rosemary and Mia, who have had their debut, emphasise how their skill as a face will determine the outcome of their debut and transition into adulthood within the Shadows House. However, an alarm soon starts ringing, signalling an approaching Phantom – balls of soot that have been left uncleaned and amassed into harmful creatures...