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Three friends from a small town - František, a doctor; Oskar, the director of the local museum; and Robert, a physical education teacher - are faced with an unexpected task. They have only fourteen days to save their children's traditional summer camp, which was unexpectedly destroyed by a storm. Their last hope is a meadow below Tramberk Castle. However, the castle's caretaker is the eccentric Evžen, who is happiest when no tourists come to the castle. But when Kudláková from the Heritage Preservation Department puts pressure on Evžen, saying that if he doesn't reach three thousand visitors in two weeks, she will hold a competition for a new caretaker, Evžen agrees to František's proposal and allows the camp to take place. However, on the condition that they help him with the visitor numbers... The situation is further complicated by František's animosity towards the new teacher Lenka.

A team of detectives bumbles and fumbles their way through an investigation that involves murder, blackmail and possibly someone they know.