When sixteen-year-old Kennedy Mitchell is proclaimed the world's last keeper, she thinks it's a cruel joke. Come on- her? Impossible. She's no warrior. She isn't wise beyond her years, or more importantly, capable of keeping Earth safe.Except... no one will listen. And since all evidence says otherwise, the job is hers whether she likes it or not.During the highly demanding training regime that follows, Kennedy struggles to fit in with Earth's renowned protectors. Especially Phoenix Jorgensen, who openly despises her. Problem is, he may be the only one she can trust. The keepers have big secrets surrounding them. Secrets Kennedy isn't comfortable knowing, much less being apart of. With Phoenix's help, she'll have to find a way out.Either that, or die trying.