When Katie Simmons has a chance encounter with Harry Styles, she could never have guessed the impact that one moment would have on the rest of her life. They are nothing alike. He is fun and carefree. She is calm and uptight. He lives his life in the spotlight, while she lives her's behind the scenes. They say opposites attract, but what if they are simply too different? Will they prove to be the missing piece to each other's puzzle, or will they realize too late that the piece just does not fit?