During a Soviet circus tour in Japan, a small street musician, Ken, meets a clown, Yuri Nikulin. Upon learning that his sick father is being treated in the Soviet Union, Ken sets off in search of him. The friendship of the great clown and the boy continues in Moscow.
| Editing | Toyo Suzuki | Editor |
| Lighting | Grigoriy Zhuravlev | Lighting Technician |
| Production | Masaichi Nagata | Producer |
| Directing | Eduard Bocharov | Director |
| Writing | Hideo Oguni | Screenplay |
| Crew | Dmitri Belevich | Sound Recordist |
| Writing | Emil Braginskiy | Screenplay |
| Directing | Teinosuke Kinugasa | Director |
| Writing | Andrei Bitov | Screenplay |
| Art | Pyotr Pashkevich | Art Direction |
| Crew | Kimio Tobita | Sound Recordist |
| Editing | Olga Katusheva | Editor |
| Production | Grigoriy Britikov | Producer |
| Art | Takesaburô Watanabe | Art Direction |
| Directing | Aleksandr Kurochkin | Assistant Director |
| Directing | Michihiko Obimori | Assistant Director |
| Sound | Emin Khachaturyan | Original Music Composer |
| Sound | Boris Karamyshev | Original Music Composer |
| Camera | Kazuo Miyagawa | Director of Photography |
| Camera | Pyotr Katayev | Director of Photography |
| Camera | Aleksandr Rybin | Director of Photography |
| Lighting | Yukio Itô | Lighting Technician |