Angels and demons are finally working together but that is because they have one thing in common, they both want Shylene dead. As Shylene's 21st birthday approaches she learns that her mother has kept a dark glooming secret from her, one that holds the key to who she is and who she must be. Shylene is the first half demon that has ever been born. Shylene's father, the man that she never knew is Satan and he has promised her to James, one of his minions. God is sending his angels to try to kill Shylene, he fears her because she is the first of her kind and he does not know what she is capable of doing. Gabe, god's right hand man doesn't agree with his father's plans and decides to take a course of his own. Demons are coming after Shylene because she is a half-breed and they do not want her to taint their bloodline. Even if Shylene choses to stay human they will still not let her live, her powers have grown too strong. Shylene doesn't know who she can trust anymore, everyone she have ever known has either lied to her or betrayed her in one way or another. Shylene has 20 days to decide if she wants to remain a human but how can she make a decision like that, a decision that will cost her everything.