Not every boy has such a treasure as Maxim - a large, powerful, simply wonderful pair of binoculars. And how great it is to climb into the attic with him, take your best friends with you and survey the surroundings, as if from the captain’s bridge. You can see everything so well: the river, the houses, the neighbor’s yard, the neighbor himself... What is it? Some fisherman came to a lonely, unsociable old man, gave him the most ordinary carp and received in return... A suitcase full of money! “What kind of goldfish is this?” – the guys are perplexed and begin to closely monitor the mysterious neighbor. This is where he takes it out of the fish belly...