Here is a funny story about the amusing and funny adventures of an ordinary schoolboy Pavlik Pomidorov and his sister Lucy Sinitsyna. One day Pavlik heard a suspicious conversation between two people he didn’t know and, mistaking them for intruders, decided to follow them. To expose the “criminals” the hero will have to show real masculine character. Pavlik will not be afraid of the dark basement, he will go down from the fourth floor on tied sheets and burst into the apartment to save the girl from “kidnapping”... And as always, the restless girl and dreamer Lyusya Sinitsyna will be nearby.