The film is based on real events and tells about a major accident that occurred during the construction of another Leningrad metro station in the spring of 1974.
| Actor | Role |
|---|---|
 Oleg BorisovNot listed | Not listed |
 Andrei RostotskyNot listed | Not listed |
 Yuri DemichNot listed | Not listed |
 Mikhail DanilovNot listed | Not listed |
 Aleksandr SusninNot listed | Not listed |
 Yuriy KuznetsovNot listed | Not listed |
 Andrey KraskoNot listed | Not listed |
 Vladimir BaranovNot listed | Not listed |
 Valery KravchenkoNot listed | Not listed |
 Yuriy OskinNot listed | Not listed |
 Yuriy SolovyovNot listed | Not listed |
 Nikolay BurovNot listed | Not listed |
 Ivan AgafonovNot listed | Not listed |
 Sergei LosevNot listed | Not listed |
 Georgi DvornikovNot listed | Not listed |
| VViktor MikhaylovZolotaryov (zavkhoz zooparka) | Zolotaryov (zavkhoz zooparka) |
 German ZhuravlyovNot listed | Not listed |
 Natalya AkimovaNot listed | Not listed |
 Vladimir FyodorovNot listed | Not listed |
 Irina KovalenkoNot listed | Not listed |
 Leonid MaksimovNot listed | Not listed |
| VVarvara ShabalinaNot listed | Not listed |
 Svetlana SmirnovaNot listed | Not listed |
 Victor ShubinNot listed | Not listed |