Skylar Demay has just turned sixteen, the age in which she gets her Timestamp. This lens is put into your eye and it displays a countdown on your arm, counting down to the moment you will meet your true love. Skylar has never given love much thought. She is also about to take a test that will determine her match and job, among other things. Her school, Reichenback Academy for Girls, isn't exactly what it seems to be. At Reichenback, Skylar trains to take care of the studying and disposal of Shifties, vicious shape-shifters that attempt to plague the populace. Though she shows exceeding potential at Reichenback, she is deemed better off at Bladeline University for Boys, where she will train to hunt, kill, and occasionally bring in Shifties for Reichenback Girls to study. When a twist in the story reveals itself, Sky finds herself not so opposed to the Shifties that she was taught since childhood to be evil.
After enduring years of neglect and cruelty from her mother and stepfather, Ariana's life changes drastically when tragedy brings her under the guardianship of five brothers she's never met and they never even knew they had a sister.
For her brothers, learning they have a sister is an unwelcome surprise. Suspicious and reluctant, her brothers see Aria as an outsider, a stranger disrupting the fragile balance of their lives.
For Aria, their home is both a new beginning and a constant reminder of the family that left her behind.
Haunted by the pain of her past, Aria struggles to adjust, her every action guarded and her trust hard to earn.
As her brothers try to understand her, they begin to glimpse the scars she hides and the strength she carries. Little by little, resentment turns to empathy, and the walls between them start to crumble. But just as the siblings begin to find common ground, the secrets and trauma of Aria's old life threaten to tear them apart. Together, they must decide whether they can overcome the shadows of the past to forge a family and whether Aria can finally find a place to belong.