[2] Petr, a Czech teenager, begins working as a trainee in theft prevention at a grocery store.

Petr and Pavla go for a swim together and then lie on the grass, where they are harassed by Čenda and Zdeněk, two apprentice bricklayers.

He becomes upset when the master mason notices them fighting and blames Petr for making him look bad in front of the boss, then asks to borrow money.

The next day Petr delivers two prints of famous paintings to the shop but one falls and breaks the glass and frame.

His father laments the fact that he invested in a violin and an accordion that remained unused while Petr bought a guitar that is unable to earn him any money.