Amidst the shimmering lights of London during the Christmas season of 1895, Gemma Doyle eagerly anticipates a holiday filled with friends, grand balls, and caring for her ailing father. But as the new year approaches, haunting visions of three girls in white shatter her plans, beckoning her back to the enchanted realms.

Joined by her loyal friends Felicity and Ann, Gemma returns to a world of magic where they reunite with their lost companion Pippa and explore powers beyond imagination. Yet, beneath the enchantment lies a brewing darkness. Kartik, a mysterious ally, warns Gemma that she must bind the magic at the Temple to prevent an impending disaster.

Caught between the glittering allure of high society and the perilous secrets of the realms, Gemma faces her greatest challenge yet. An old friend of her mother, now a formidable adversary named Circe, stands in the way of her destiny. Will Gemma have the strength to defeat Circe and save both worlds, or will darkness prevail?