The heroine of the story is a teenage Jitka Pažoutová, suffering from her fatness and clumsiness. For her, the real torture is especially the gym classes led by a sympathetic gym teacher, nicknamed Bohoušek by the girls. A change for the better is a dodgeball match, which the girls win thanks to Jitka's "guns", which simply cannot be caught. At the tournament, Jitka meets Honza Koubek - a boy who insults her, but then apologizes to her and persuades her to try using her strength in the shot put...
