The main character of the detective series "Barmen" is Alexey Kalinin, a young but experienced police officer. He has dedicated his whole life to his calling and knows nothing about other professions, especially business. However, unexpectedly, he inherits a small family bar that his father used to manage. After weighing the pros and cons, Alexey decides to sell the establishment. But then a well-known businessman, Shcherbakov, enters the game, hiding something.