Lea (Fries) has been suffering from cystic fibrosis since her childhood. She is 22 years old now and has to live in constant fear of suffocation despite using an oxygen concentrator. Although taking pills to diminish her symptoms, Lea can barely fulfill everyday tasks like climbing stairs without having to catch her breath after a short while. Her older brother who suffered from the same disease died several years ago after a lung transplant. Their father left the family because of his children's disease and now lives in South America.