Izzy is nineteen and still lives at home. She and her father move all the way to Cheshire, England where her father is marrying Anne Styles. Yes, THE Anne Styles, mother to Gemma and Harry Styles. Izzy is there to make her father happy and is not looking for a relationship, so what can a little harmless flirting do? Too bad one of Harry's extremely close friends doesn't think of it as "harmless" flirting he when falls for Harry's new step-sister.