Romka and his sister Leshka go on vacation to their aunt in the village - to a quiet, peaceful place with the sweet name Medovka. It seems that a carefree and sunny summer is ahead, but in search of an escaped hedgehog, Romka falls into a hole, where he finds a moldy trunk filled with golden shells. The guys decide not to tell anyone about the find, forgetting that the one who hid the trunk can return for his treasure... Previously, the book was published under the title “The Case of the Curious Hedgehog.”