Tera is an Earth-like planet in a galaxy unknown to man. Within it 7 very different groups of inhabitants coexist with minimal interaction. Each of the groups, or purviews, are separated within Tera and have a male and female representative who make up the Council. Council travels each month to a different purview, to keep balance, and to discuss important political decisions such as trade, economic growth, etc. One monthly meeting in Esfera (1st purview), however, goes terribly wrong. Council was thinking of removing some of the boundaries, both physical and political, that had been set to keep the purviews apart, to keep a balance. The boundaries had been originally put there for fear of one perveiw overpowering the others. At the meeting in Esfera, a secret group of Council offenders, called Hallocrosses, interrupts the meeting and compromises the Teranian government. Meanwhile in the purviews, 8 teenagers discover they aren't like other Teranians and must save their world.
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.