'Hello class, my name is Miss Flack. I am the substitute teacher... So this term i have a project for you. It is in conjunction with my previous school. it will be a pen-pal project. The aim of this is for you to stop using mobiles computers and simply use a pen and paper' these words changed the lives of three boys. Harry Styles, Liam Payne and Zayn Malik start writing to a pupil each at Hall cross, but will it all be smooth sailing? Will they ever meet their mysterious Pen-Pal?

Bipolar. Also known as maniac depression. Symptoms include "mood swings" from hyperactive to depressed. Louis knows this. His mom's told him about it one time. Harry has been acting differently. For some time he'll be bouncing off the walls, then the next he's locked himself in his room. Louis' worried. So is Harry's mum, Simon, Paul and the rest of the band. They say he should just see the doctor, just so he can maybe find out why he's acting like this. Management on the other hand thinks it's all just a show. Harry knows the truth though. He's known for quite some time. But he won't tell anyone.

The fame has finally gotten to Harry Styles. After a year of being in the limelight with girls, money and an endless stream of papparazzi, he's changed for the worse. He takes his fans, friends and family for granted. No one can change his attitude...or maybe one girl can.