The good thing about a low point is, you can not fall lower. At least the unemployed Maria Kowalke thinks after her break-up and when the "strange" father re-enters her life. Instead of teaching art education, Maria, who urgently needs work, has to step in as a music teacher in a secondary school. The lack of concentration and insubordination of their 10th graders quickly push them to their limits. It could always be worse! But Maria Kowalke is a teacher who advocates for her students, and her father Max Schellinger a pensioner who is far from the old iron.