For over a millennium, the elves have concealed their powers. Until now. Since arriving on the mortal shores, the elves have systematically colonized the primitive human race. As subjugated peasants, the mortals toil to supply the elven realm with riches. The elves' magic has degraded their race to a point where they have been rendered infertile. A hundred years ago, they resorted to interbreeding with humans in an effort to preserve their species. In the elven realm, Jassyn has spent his life both researching the fertility crisis and being forced to produce offspring. His existence balances on a narrow precipice between solving mysteries of the elves' infertility or succumbing to his handlers' maltreatment. A new assignment, tutoring a half-breed princess in a human realm, promises a temporary relief. But he soon discovers the real reason for his presence. Serenna, Jassyn's new pupil, has earned the right to leave the mortal realm to join the elven courts. Or so she thought. Her anticipated life as a noble takes an unexpected turn when a monstrous race emerges, threatening the existence of all. Instead of joining the elven noble houses, Serenna is conscripted to a military academy for half-breeds. She learns that not only do half-breeds like her and Jassyn have magic, but that the elves have suppressed all knowledge of their powers. In a race for survival, she must learn how to wield Essence to fight for her life. With the imminent threat of war, Serenna struggles to master her magic before being thrown on the front lines. Meanwhile, Jassyn strives to protect her, but his forced servitude takes a darker turn, leading him down a destructive path.