Everyone in the universe knows the legend: Obsidian is the only connection between the strands of time, space, and, most importantly, life. But some wonder if Obsidian is a series of mystical stones connecting the universe, a group of protecting spirits, a vague name, or if it is just a plain legend.
But when the Dark Matter reveal their sinister threads of control over the strands of life, death, and power, all creatures know that they must find Obsidian, whoever or whatever it is, before the Dark Matter do - but there's a catch... Only five beings gathered on a planet named Xantovion have been chosen by the universe to do so. They must find each other and unite, before it's too late.
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.