In the early 1960s, Kim Nelson travels to Istanbul in search of the truth about her grandmother Jade, a mysterious woman who was once the Sultan’s favorite and whose fate remains surrounded by secrets. Her quest leads her to reconstruct a story that began several decades earlier, during the final years of the Ottoman Empire, amid harems, political intrigue, and struggles for influence. As she uncovers Jade’s past, Kim also discovers the existence of a lost treasure and a strange legacy connected to the power of the Djinn. Her journey takes her far beyond Istanbul, in a quest where family history, identity, and ancient secrets become deeply intertwined.