Have You Seen Petka? (1975) comedy

Young boys and girls, led by the ringleader Petka (played by Andrei Krylov), commit a series of pranks and sneak into a collective farm plant, where they are overwhelmed by dreams of space flights. After several incidents, there is no peace for the chairman of the collective farm, Yuri Sergeevich (played by Pyotr Shcherbakov). With his ideas, Petka causes a lot of trouble for the adults, and they decide to entrust him with a “serious” matter…