Bureaucrats from a chemical plant in a small industrial town allow the lake to be polluted with waste. An enthusiast in the fight for a clean environment, Zaborov begins an open struggle and is defeated. This does not bother him and he disappears for a while. After some time, a prehistoric lizard appears in the lake, which immediately attracts the attention of the world community.
| Actor | Role |
|---|---|
 Vladimir SteklovNot listed | Not listed |
 Aleksandr Pankratov-ChyornyyNot listed | Not listed |
 Evdokiya GermanovaNot listed | Not listed |
 Aleksandr BelyavskiyNot listed | Not listed |
 Valentin SmirnitskiyNot listed | Not listed |
 Aleksandr PashutinNot listed | Not listed |
 Viktor IlichyovNot listed | Not listed |
 Lyubov PolishchukNot listed | Not listed |
 Gennadiy YalovichNot listed | Not listed |
 Boris NovikovNot listed | Not listed |
 Natalya GurzoNot listed | Not listed |
 Valentin BryleevNot listed | Not listed |
 Viktor UralskyNot listed | Not listed |
 Viktor FilippovNot listed | Not listed |
 Lyudmila StoyanovaNot listed | Not listed |
| SSvetlana StarikovaNot listed | Not listed |
 Aleksandr PyatkovNot listed | Not listed |
 Anatoliy ObukhovNot listed | Not listed |
 Natalya KrachkovskayaNot listed | Not listed |
 Yuriy DubrovinNot listed | Not listed |
| GGennadiy Morozovжурналист | журналист |