A Czech medical television series that focuses on an emergency department. Each episode follows cases inspired by real-life stories and the cases of patients and healthcare professionals.

Ten-year-old David joins a sailing club. He trains hard and helps repair the sailing boats, but people have to take turns actually sailing. The club chairman Vala wants David to sail with his son Olda. Olda's previous team mate Béda has grown too fast, but with little David Olda could win a place on the regatta to Finland. Olda is arrogant and accustomed to winning with little effort; he bullies David and calls him "Greenhorn". He makes David his servant and blames him when things go wrong.

Attorney Horic is a specialist for cases connected with motoring. He approaches to his work unconventionally, he does not hesitate to search for evidence right in the terrain and he is willing to take various risks.