The story is narrated by ten-year old Staszek, who writes in his diary about his school-friend Jozef. Jozef comes from a family of blacksmiths, all of whom bear the name Jozef. Since he is the sixth consecutive son to be called Jozef, he is nicknamed Szustek (meaning "sixth one").
Krzysztof Majchrzak
Bartosz Opania
Grażyna Błęcka-Kolska
Mariusz Saniternik
Maria Gładkowska
Jan Nowicki
Franciszek Pieczka
Izabella Bukowska
Joanna Orleańska
Magdalena Ostolska