Streusler wants his daughter Nelly to finish school and study at the university, but she has difficulties learning (Latin and Maths). He uses every possible way of bringing people home to help her, using his famous Streuselkuchen as bait. In the meantime, a new tenant arrives: a chimney-cleaner opening a new office in the same house where the bakery is. Streusler protests, he already sees black dirt in his tarts and flying around everywhere.