Kai Johnson isn't the same girl her best friend left behind. Though still a shy, book-loving person at heart, she's built a tough shell to protect a once-soft heart. Now, she works quietly backstage, helping production crews set up for stadium concerts-a job that lets her stay invisible. The only time her true, loud, and hyper self emerges is when she's around the few people she trusts. ​But Kai's carefully constructed world shatters the moment she arrives at the venue and sees the familiar logo: One Direction. The band setting up for the biggest tour of the year includes the one person she hasn't physically seen or heard from in years-her former best friend, a member of the world's biggest boy band. ​Will the friendship be as strong as before he became a global sensation? And now that they're finally face-to-face, will Kai find the courage to express her deeper, long-held feelings to him, or will the fear of ruining their bond force her back into her protective shell?