The two twins, Jacek and Placek, start out as cruel and lazy boys whose main interest is eating, eating anything, including chalk and a sponge in school. One day they have the idea of stealing the moon; after all, it is made of gold.
| Actor | Role |
|---|---|
 Ewa SzykulskaJacek (voice) | Jacek (voice) |
 Dorota StalińskaPlacek - voice | Placek - voice |
 Jan Kobuszewskinarrator | narrator |
 Ilona Kuśmierska-KocyłakMother | Mother |
 Lech OrdonNot listed | Not listed |
 Zygmunt ZintelNot listed | Not listed |
 Jarosław DominNot listed | Not listed |
| JJerzy KramarczykNot listed | Not listed |
 Paweł SzczesnyNot listed | Not listed |
| SStanislaw Andrzej BadenskiNot listed | Not listed |
| MMaciej WolfNot listed | Not listed |
 Wiktor ZborowskiNot listed | Not listed |
| MMirosław WieprzewskiNot listed | Not listed |
| AAndrzej ArciszewskiNot listed | Not listed |
| ZZbigniew PoręckiNot listed | Not listed |