A car with a dead man on it burns over the city, and Captain Machrák discovers that his best childhood friend is missing. To find out the truth, he must unravel a complex case that revolves around a VAT refund. The solution to the case ultimately depends on a risky action - the killers must put their agent in prison to extract information from the mafia about the whereabouts of the main witness.

Just before Christmas, someone shoots an old man in his own living room. A banknote of incalculable value disappears from the apartment. The detectives manage to find the suspect in record time, but something doesn't sit right with Captain Ledecký. He knows that the real thief and murderer is still at large. And he's not the only one who's willing to kill again for a piece of paper...