"All my life I've pretended to be someone who I'm not. This is my chance to change that." World War 2 has begun and many people are signing up for the army to protect their country. Among them is a young girl called Charlotte Stewart. But she doesn't want to be a nurse she wants to be a pilot. Her best friend Billy persuades her to join the air force but she has to pretend to be a man. Will anyone find out her secret? Or will she break the boundaries?