Seventeen year-old Regan Vuk has lived her whole life under the shadow of her future: the pack alpha. She is fast, smart, and determined. According to her own pack members, she is a shoo-in. But Regan's dad has a secret.Seventeen year-old Charlie spent her adolescence drifting from place to place with a mother desperate to hide her illegitimate daughter from the unforgiving reality of werewolf pack dynamics. All Charlie has ever wanted is to know her father--and the family that's been kept from her all these years. But most of all, she wants a place to belong in the world. Where she doesn't have to pretend she can't sprout fur and paws at will.When Charlie finds out the only way to fit in with her new family is to defeat her long-lost sister for the role of alpha, she refuses. That is until she learns that the strange and alluring vampire she's befriended, Owen, is the same vampire prince that's been promised the winner. Regan has no doubt that, although she loathes the vampires, it will be her who "wins" Owen. Only problem: Charlie's already fallen for him.Will the vampires and werewolves finally forge peace-or will sibling rivalry prove fatal for them all?