Everyone says he is incorrigible... Little Robert is an only child who has everything, he needed to be responsible for something, to take care of something. At least that's what the roommate of the apartment building where Robert lives thought, and sent him a live guinea pig by mail. The guinea pig gets lost in the apartment and Robert, to the amazement of his parents, studies books about animals and is sad that he lost the guinea pig. Imagine the astonishment of his father and his colleagues from the design studio when the father finds the guinea pig in his briefcase...
| Actor | Role |
|---|---|
| MMiroslav BatíkNot listed | Not listed |
 Petr SvojtkaNot listed | Not listed |
| JJiří NovotnýNot listed | Not listed |
 Růžena MerunkováNot listed | Not listed |
 Antonie HegerlikováNot listed | Not listed |
| JJosef MrázNot listed | Not listed |
| PPetr PospíchalNot listed | Not listed |
 Petr SvárovskýNot listed | Not listed |
| EEva TrunečkováNot listed | Not listed |
 Miloslav HomolaNot listed | Not listed |
| RRichard KnotekNot listed | Not listed |
| MMartin HronNot listed | Not listed |