After 21-year-old wingless fairy Elaine accidentally awakens a mysterious Golden Flame inside her, she frees Morrigan — an ancient demoness whom Elaine’s father, Fairy King Alaric, and Academy Headmistress Selena have kept in chains for twenty-one years. Morrigan quickly realizes that part of her Dark Flame was magically hidden inside Elaine and decides to keep the girl close until she can find a way to take her power back. A magical bond forms between them, forcing them to share each other’s pain, pleasure, and desire, turning their hatred, sexual power struggle, and battle for control into a dangerous mutual attraction. Meanwhile, Elaine’s boyfriend Kael, a siren who has spent years erasing and rewriting her memories, works with Selena to regain control over Elaine and use her power. When Elaine and Morrigan finally break the magical bond, they discover that their feelings remain — and Elaine chooses Morrigan on her own. But Kael and Selena kidnap Elaine and force Morrigan back into the same chains where everything began. To save Elaine, Morrigan gives her all of her Dark Flame, and in the finale Elaine unites the Light and Dark Flames, brings Morrigan back to life, and chooses her for good — no longer because of magic, debt, or coercion, but because her heart is truly hers.
