When Izzy's Abuela dies, she is left alone in the world once more. Luckily for her, Abuela's favorite foster son had promised Abeula he would be her guardian.
Billy seems like a heaven-sent guardian in a world that treats omegas like children no matter what age they are. He's kind, he lets her do what she wants as long as she's home by curfew, and when he's deployed she lives with his best friend's family, who instantly feel like a second family to Izzy.
It doesn't take long for her to start seeing another side of Billy though, a side that she's a little scared of.