Ordinary Kyiv schoolchildren Zhenya and Vitasik again took up their own investigation. And it's not surprising, because when the first beauty of the class unexpectedly appeared at school in tears and asked for help, the guys had to delve into the mysterious case of the SD agent. The young detectives distinguished themselves by coping with the task and had a well-deserved rest.
And the vacation promised to be unforgettable — on the three-deck motor ship "Kvitka-Osnovyanenko"! However, even here, adventures awaited them when they decided to help the mysterious Tsypa in his quest for justice.
