Mr. Günther is a thoughtless brute. Noemi, Valerie, and Yasmina believe he needs some discipline and decide to teach him a lesson. Charming yet determined, Noemi, Valerie, and Yasmina are the best of friends. They live close to each other on Senftalgasse and are usually very busy. For a few weeks now, Günther has also been living in the neighborhood, a man with a mustache and a checkered jacket. He has some unpleasant habits. He throws his cigarette butts everywhere, is mean to Valerie's little brother, and shouts at his wife. Noemi, Valerie, and Yasmina are annoyed and decide that it’s time to give Mr. Günther a little education.