My mom is the best! Any child is sure of this, including an eight-year-old girl, an orphan, living in a boarding school and dreaming of a “Sunday mother.” But Ulla, who appears in the girl’s life, turns out to be completely different from these dreams. Will the Sunday child and the Sunday mother manage to get used to each other, to recognize each other - the real ones, not the imaginary ones? They see each other only on Sundays. But perhaps something more will come out of this... The book received the German Children's Literature Prize for 1984.