Foma Zamykalkin reads a book with scary stories at night, but an imp constantly disturbs him. The angry main character decides to get even with the annoying disturber of his peace. But, trying to catch the imp, Foma Zamykalkin constantly disregards the rules of handling electrical appliances, exposing himself to danger. The animation won the Silver Medal at the International Security Film Festival in Czechoslovakia (1972).

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