Three boys are helping Soviet Intelligence to catch German spies during WWII.
Grigoriy AronovDirector
Mishka Alekseyev
Vaska Kozhukh
Styopka Panfilov
Ivan Vasilyevich, KGB major
Aleksey Burakov
Uncle Petya / German spy
Semyon, truck driver
Zhora "Brunette"
Shurka "Krendel"
Valeriy Kaplunov, rocketeer
Voronov, clock master
House superintendent
Mishka's mother
Woman on the street market
Air raid militia
Security officer
Anastasiya, Semyon's wife
Policeman
Mishka's neighbour
Bread factory director
Lyusia, Mishka's sister
Policeman Mironov (uncredited)
Man in the bathhouse (uncredited)
Security officer (uncredited)
Guard (uncredited)
