It is the first of April, so Prinicipal Anton has prepared lots of jokes like he does every year. The children of Teacher Ank's class will be divided into four groups: Suns, Moons, Stars and Rockets. Father Karel does not agree with this decision and heads to Teacher Ank for answers.

Teacher Ank teaches hunk training to her kids in class, but this seems to be counterproductive to them and their parents. Hannah worries.

The last school day has arrived before summer holiday and everyone is preparing for the celebration.