Head of the kindergarten Troshkin is fatally unlucky: he turned out to be like two drops of water with a bandit named "Professor", who kidnapped a unique helmet of Alexander the Great. Police introduces the good-natured Troshkin among thieves - and he has no choice but to carefully portray his double-villain, confusing everyone around. Over time, he begins to play his role so brilliantly that he sometimes becomes dismayed. Meanwhile, his life is in serious danger.