An elderly man - a naive, impractical artist of the musical comedy theater - writes an operetta about goodness. His son is a resuscitation doctor, very businesslike and practical, and teases him all the time. The marriage of Petrov Sr. to the young ballerina Alena also did not add harmony to their relationship. But one day, father and son suddenly realize how necessary they are to each other... When the young stepmother begins to be in danger during childbirth, the son stops being sarcastic and fulfills his human and filial duty.
| Actor | Role |
|---|---|
 Vladislav StrzhelchikNot listed | Not listed |
 Yuri BogatyryovNot listed | Not listed |
 Natalya VarleyNot listed | Not listed |
 Irina SkobtsevaNot listed | Not listed |
 Ivan DmitrievNot listed | Not listed |
 Igor DmitrievNot listed | Not listed |
 Vladimir RetsepterNot listed | Not listed |
 Boris SokolovNot listed | Not listed |
 Vsevolod GavrilovNot listed | Not listed |
 Aleksandr BelinskyNot listed | Not listed |
 Vadim YakovlevNot listed | Not listed |
 Natalya KustinskayaNot listed | Not listed |
 Anatoliy RavikovichNot listed | Not listed |
 Evgeniy BaranovNot listed | Not listed |
 Mikhail DanilovNot listed | Not listed |
 Valentina KosobutskayaNot listed | Not listed |
 Pantelejmon KrymovNot listed | Not listed |
| VViktoriya GorsheninaNot listed | Not listed |
 Natalya ZhuravlyovaNot listed | Not listed |