Meine Schwester Tilli.

Hannes, 22, and his girlfriend Tanja have to realize that there are things in their relationship that have an unfavourable effect on their togetherness; now they try to find out why their love should not last. Tilli, Hannes' 16-year-old sister, and her boyfriend Robert, on the other hand, just look sadly at the rest of their remaining pocket money and wish they could get rid of their money worries. But for Tilli's family with their seven children, who live in a district town in the GDR, it's not that easy. However, the extended family's life is not disrupted by problems, rather it is strengthened and the family's cohesion is intact.