A young hustler on the streets of 18th Century Cairo, Nahri lives by her wits and has always done so alone, using certain special abilities that help her get by. She can, most of the time, tell if someone is sick, or what ails them. She has “yet to come upon a language she didn’t immediately understand,” can sometimes help those who are unwell, and seems to be able to heal quickly herself. Nahri uses her strange abilities to take what she can from whom she can, trying to build up a little store of cash so she may one day train to be a real healer.
But one ordinary day, what should be a run of the mill fake exorcism ends up going horribly wrong when the young girl Nahri is pretending to help turns out to be actually possessed by a djinn—an ifrit who recognises something special in Nahri.