The series focuses on high school students who are currently in their last year at school. The two friends Jonas and Nico want to follow the events with their own YouTube channel - and uncover the mystery surrounding the mysterious new student Kian. He turns the girls' heads and gives the teachers a real headache as a bad boy. Krass Abschlussklasse is a spin-off of the series Krass Schule - Die jungen Lehrer, a German scripted reality soap.
They say people from the Ruhr area wear their 'heart on their sleeve'. The social documentary accompanies the sometimes oppressive everyday life of people from the Ruhr area for four months, but they always have their hearts in the right place.