Vojtěch Vacke

A red haired Petra is not your ordinary girl - in addition to her regular "girly" interests she's also a goalie in boys football team.

The sun is shining, the river is sparkling, and a boating group sets off downstream for a holiday adventure. Led by the enthusiastic leader Tom, they travel down the river in two punts and a kayak. The peaceful journey is disrupted by a group of gypsies who bombard the boats from the bridge with plastic bags filled with water. That same day, the boaters and the gypsies meet again. Despite the tense atmosphere, both parties try to make peace, but it doesn't last long. The situation worsens when one of the girls loses the group's money. The boaters still want to continue their journey. Tom therefore declares a state of shipwreck, and everyone gathers together the remaining money and supplies. When some of the money is lost, suspicion falls on the gypsies, whom the boaters have met again. However, it soon turns out that the thief is someone from the group. Disputes break out, distrust grows into open hostility, and tension builds...

A detective story set in a youth mountaineering club. One of the members, Ivan Kočička, nicknamed Kocour, single-handedly investigates the mystery of the body of an unknown man, which he discovered in a cave on top of a rock.