The main characters of the series are officers from one of the St Petersburg police departments. Five - because there are five operatives. Major Pavel Shaposhnikov, Captains Dmitriy Krasavchenko and Timur Bubnov, Senior Anton Vetrov and Lieutenant Vladimir Kuzmin. Five different characters brought together by their commander, Lieutenant Colonel Andrei Golovanov. A man with a lot of humour and a rich past. He still remembers when there were streets of broken lanterns in St. Petersburg.