A fifteen-year old Ludka navigates first love and frustrations related to failures of the adult world during summer holidays.
| Actor | Role |
|---|---|
| JJulia ŁuczkowskaLudka Balwikówna | Ludka Balwikówna |
| AAndrzej PstrągMarek Korcikowski | Marek Korcikowski |
| ZZofia TruszkowskaLudka's Mother | Ludka's Mother |
 Anna SeniukEliza | Eliza |
 Maria HomerskaProfessor Mareszowa | Professor Mareszowa |
 Jan MachulskiLudka's Neighbour | Ludka's Neighbour |
 Barbara LudwiżankaLudka's Aunt | Ludka's Aunt |
 Janusz BukowskiStefan | Stefan |
 Aleksander SewrukLudka's Father | Ludka's Father |
 Witold SkaruchKasperski | Kasperski |
 Agnieszka FitkauStefan's Lover | Stefan's Lover |
 Małgorzata LorentowiczParents' Committee Member | Parents' Committee Member |
 Tadeusz PlucińskiNeighbour's Business Partner | Neighbour's Business Partner |
 Ewa MirowskaStore Clerk | Store Clerk |
 Iwona SłoczyńskaTeacher | Teacher |
 Janina BorońskaLudka Balwikówna (voice) | Ludka Balwikówna (voice) |
 Zbigniew PłoszajNot listed | Not listed |
 Jerzy Zygmunt NowakInstitute Assistant (uncredited) | Institute Assistant (uncredited) |
 Elżbieta StarosteckaJadzia (voice) (uncredited) | Jadzia (voice) (uncredited) |