Outcast from the Underworld by their sinister brother Hades, Lucia, Marina, and Valeria, the sisters three, are ensnared to the Middle World, as punishment for their deception and betrayal to their family, unable to return home.
However, when a goddess takes pity upon the poor sisters, she allows one condition: they must succeed in a series of deadly, daunting tasks by the Summer's Moon.
The sisters agree, unbeknownst to the obstacles that may keep them all from their desired fate.
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.