Adam "Mruk" Niedzicki is a member of a gang from a juvenile detention center led by two educators: Jóźwiak and Andruszewski. During a robbery at a currency exchange office, the owner dies, and "Mruk" decides to withdraw. He receives news of his mother's death and is given three days' leave. He does not know that he will become involved in a murder.
| Actor | Role |
|---|---|
| LLucyna ZabawaMagda | Magda |
 Jerzy BończakJóźwiak "Józwa", wychowawca w Zakładzie Poprawczym | Jóźwiak "Józwa", wychowawca w Zakładzie Poprawczym |
 Witold Pyrkoszkapitan Zygmunt Rzoch "Rzeźnik" | kapitan Zygmunt Rzoch "Rzeźnik" |
 Edward Linde-LubaszenkoAndruszewski "Andrus", wychowawca w Zakładzie Poprawczym, szef bandy | Andruszewski "Andrus", wychowawca w Zakładzie Poprawczym, szef bandy |
 Artur ŻmijewskiAdam Niedzicki "Mruk" | Adam Niedzicki "Mruk" |
| AAndrzej ZauchaNot listed | Not listed |