It all started with the fact that in front of Dima and his brother Alyosha, the luxurious Mercedes of Vadik the Gadik, a famous bandit in their area, was stolen. The next day, having accidentally discovered numerous boxes with Black Knight anti-theft devices in his warehouse, the brothers were perplexed: why didn’t Vadik install this invincible security device on his car?! Soon, accidentally finding themselves in a detective agency, the guys recognize one of the detectives... as a cheeky car thief! Moreover, this agency was engaged in the search for stolen cars! What a challenge! And the boys are not at all averse to breaking their heads over her...