Once again, 16-year-old Jonas (Julias Gause) starts a new school and, as always, he has no intention of being anybody’s darling. Jonas has muscular dystrophy, is confined to a wheelchair and knows that he will die sooner rather than later from this incurable and progressive disease. His mother Alma (Anneke Kim Sarnau), who raises Jonas alone and would rather take a second job than forego therapy for him, is determined to delay his deterioration. She has placed Jonas with Dr. Wildenhahn (Sophie von Kessel), an authority on Duchenne disease. The doctor manages to be taken seriously by Jonas, that is until he gets to know Emily (Lina Hüesker), Marianne Wildenhahn's daughter, who goes to his class. Emily has a massively low academic grade, which she hides from her mother because of the doctor’s high standards. Emily falls in love with Jonas, and her sincere affection gives him the courage to love her back. But Marianne fears her unstable daughter might be overwhelmed by a relationship with a terminally ill person. Alma, in turn, feels that Jonas is beyond her control and slipping away. Both want only the best for their child, and each tries to stop the love of the two teenagers because they cannot accept that Emily and Jonas may know what is best.