In order to shorten the completion period of a new work area, the director promises that he will organize a grand concert of famous opera singers at the opening of the new hall. There is an unexpected problem - there is no grand piano. The brigadier sends one of his workers to look for the instrument in the town. He finds himself in a very mysterious new world. After a series of comic situations, he manages to find the grand piano. The grand piano is in the production hall. The order of the day is completed, but is that enough?
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