Trapped in a loveless engagement to the powerful Orion Lancaster, Ruby Nightingale dreams of breaking free. But her world is turned upside down when she is kidnapped by Orion's rebellious little brother, Epsilon Lancaster. Epsilon turned out to be a dark figure who planned to use Ruby as a pawn in his scheme to usurp Orion's reign. Epsilon plays a dangerous game, pretending to adore Ruby to manipulate her, while telling himself he sees Ruby as the perfect weapon to provoke his brother. However, Ruby begin noticing the things Epsilon does which only seemed to be benefiting Ruby herself. Torn between fear and a pull toward him, Ruby grapples with her growing attraction to the one man she should despise. In a game of power and revenge where love is a dangerous weakness, Ruby must decide if her heart will lead her to liberation-or to ruin.