Young Małgorzata leads a very boring life as a cashier. One day a robber riddles her bank car with bullets, kills the driver and two security guards and takes the money. The police finds out that the stolen banknotes are being spent at a fashionable spa resort. The only way to find the criminal is to favor Małgorzata with a seaside holiday in the company of a handsome Captain as her brother.
| Actor | Role |
|---|---|
 Ewa KrzyżewskaMałgorzata Makowska | Małgorzata Makowska |
 Zbigniew CybulskiJan Ziętek | Jan Ziętek |
 Edmund FettingLt. Kapliński | Lt. Kapliński |
 Piotr PawłowskiRogulski | Rogulski |
 Gustaw LutkiewiczTadeusz Wróblewski | Tadeusz Wróblewski |
 Adam PawlikowskiHenryk Zawadzki | Henryk Zawadzki |
 Mieczysław MileckiMO Colonel | MO Colonel |
 Ignacy MachowskiSzymański | Szymański |
| KKrystyna BrylManicurist | Manicurist |
 Helena GrossównaReceptionist | Receptionist |
 Tadeusz KosudarskiBarman | Barman |
 Krzysztof KowalewskiSzymański's Second | Szymański's Second |
| MMirosław MajchrowskiWaiter | Waiter |
 Ludwik PakBarber | Barber |
| AAldona PawłowskaMarysia's Grandmother | Marysia's Grandmother |
 Kazimierz TalarczykBank Convoy Driver | Bank Convoy Driver |
 Ewa WiśniewskaMarysia Kłosek | Marysia Kłosek |
| KKatarzyna BoverySinger (uncredited) | Singer (uncredited) |
 Krystyna CierniakGirl at Party (uncredited) | Girl at Party (uncredited) |
 Wojciech Duryasz(uncredited) | (uncredited) |
| HHenryk KurekMan at Party (uncredited) | Man at Party (uncredited) |
| HHelena MajdaniecHerself (uncredited) | Herself (uncredited) |