Based on the short story of the same name by Yuri Sotnik. The first-grader Lyosha, when he was left home alone, decided to spend this first independent day of his life calmly and sensibly. But the neighborhood kids disrupted Leshya's plans. They used his apartment to rehearse an amateur performance.
Aleksand Mashovets
as Anton Dudkin
Vladimir Semenov
as Lyosha
Anatoliy Kuznetsov
as Victor Zhuravlev, Lyosha's dad
Tatyana Konyukhova
as Elena Zhuravleva, Lyosha's mom
Igor Yershov
as Senya Lastochkin
Yuri Medvedev
as Terenty, janitor
Vasili Neshchiplenko
as policeman