After the suspicious death of her mother in 1895, sixteen-year-old Gemma returns to England, after many years in India, to attend a finishing school where she becomes aware of her magical powers and ability to see into the spirit world.

At Spence Academy, sixteen-year-old Gemma Doyle continues preparing for her London debut while struggling to determine how best to use magic to resolve a power struggle in the enchanted world of the realms, and to protect her own world and loved ones.