Like many typical girls, eighteen year-old Rachel Morgan falls head over heels for an out-of-reach guy, named Harry Styles, who, in her presence, tints her cheeks red, strips her of her vocabulary, and has all of the Earth's butterflies fluttering to her stomach. While her long-time best friend Niall is spilling his juice or crumbs from his Nando's chicken all over their usual cafeteria table, Rachel is spilling over Harry with her friends, Nat and Ashley. The only downside to Harry's lush, brown curls, cheeky dimples, and sensual, green eyes is that while he's wearing his husky blazers, preppy Jack Wills hoodies, or rusty Ramones t-shirts, he's got Rachel feeling like she's wearing an invisible cloak. But after joining the volleyball team, she dumps her invisible cloak for a jersey as Harry, who's also on the volleyball team, begins flirting with her. After the two go on an unplanned, syrupy adventure, they find themselves more close to each other than ever - that is, until a new guy moves into town; Zayn Malik. Starting off as a shy, artistic, and mysterious friend to Rachel, Zayn soon becomes the only wedge that could come between her fairy-tale relationship with Harry. Being Zayn's best friend, Liam Payne, the school jock, helps to further Rachel and Zayn's relationship. To complicate things even further, her best friends, Niall and Louis, begin to harbour secrets and spin cobwebs of their own. Then, a new girl with some baggage enrols into Beakman High School and gives Rachel an unpleasant feeling. What do you do when love gets complicated?

Maddie has her hormones to deal with, her parents nagging at her, and her little sister waking her up too early everyday. Worst of all, the complicated way of a love life and having to cope with the cruel twist and turns of a teenage life. How will she get through it? She has her three best friends Liam, Zayn and Louis for starters. But what will happen when one of them starts to fall for with her, along with the two most popular guys in the school? All I'll say is things can get a little crazy when someone falls Head Over Heels.