Forgotten could be viewed as the continuing of the book, Anthem by Ayn Rand. Prometheus and Gaea were living along peacefully with their three children. The people seeking their death kill Gaea, twist Prometheus's mentality, and kidnap their three children to brainwash them and to turn them into government spies. They grow up with normal lives, never knew they were sisters, and let's just say one of them has a secret. Little did they know that a certain person watching the scene would soon meet up with them to unravel the truth of who they really are.
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.