Ariella Heaghen gave up everything to stand by his side. Her pack, her blood, everything. He begged her to be his luna, promising her the world at her feet, but just when she though he would keep his promise, betrays her. Alpha Nolan comes back from the war with his fragile first love, turning the world Ariela has come to know, upside down. And in the midst of this chaos is none other than the dangerous Lycan King, Caelum, who had come to take what is owes to him. In order to escape her cruel fate, Ariela sacrificed herself for her pack again, offering herself to Caelum as a repayment for Nolan's debt. And Caelum is pleased with his payment.. But things may not just go the way she planned... Love was never part of it... Nor was the danger that came with the exchange...