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.
| Directing | Eduard Bocharov | Director |
| Writing | Emil Braginskiy | Screenplay |
| Crew | Kimio Tobita | Sound Recordist |
| Directing | Michihiko Obimori | Assistant Director |
| Editing | Toyo Suzuki | Editor |
| Lighting | Grigoriy Zhuravlev | Lighting Technician |
| Art | Takesaburô Watanabe | Art Direction |
| Directing | Teinosuke Kinugasa | Director |
| Crew | Dmitri Belevich | Sound Recordist |
| Production | Masaichi Nagata | Producer |
| Writing | Hideo Oguni | Screenplay |
| Editing | Olga Katusheva | Editor |
| Directing | Aleksandr Kurochkin | Assistant Director |
| Writing | Andrei Bitov | Screenplay |
| Production | Grigoriy Britikov | Producer |
| Art | Pyotr Pashkevich | Art Direction |
| Sound | Emin Khachaturyan | Original Music Composer |
| Camera | Kazuo Miyagawa | Director of Photography |
| Camera | Pyotr Katayev | Director of Photography |
| Sound | Boris Karamyshev | Original Music Composer |
| Camera | Aleksandr Rybin | Director of Photography |
| Lighting | Yukio Itô | Lighting Technician |