The main characters of the series are a group of friends; two of them work as police officers and the third one is a prosecutor. They believe in the saying: one for all and all for one, just like the three Musketeers. When the chief of Police is murdered the trio decide to declare private war on the boss of the local mafia. Some of their actions are on the brink of law; yet, they have to adjust to the methods mafia uses in order to catch the criminals. The world in the series is gloomy and dark, however, there is still a place for humour and a positive message. The main characters are an example of people who still believe in justice, friendship and loyalty to one another.