Shortly before her eleventh birthday, Sylvia receives her own apartment key. The sensitive girl is proud of the sign of recognized self-reliance, but also unsure whether she will meet the general expectations. So far, she has been mothered like a baby, especially by her twin sister Evelin, who knows everything much better.
| Actor | Role |
|---|---|
 Irina SchackowSylvia Jäger | Sylvia Jäger |
 Kathrin MannEvelin Jäger | Evelin Jäger |
 Walfriede SchmittMutter, Frau Jäger | Mutter, Frau Jäger |
 Günter SchubertVater, Herr Jäger | Vater, Herr Jäger |
 Gabriele StreichhahnMarlis Schmücke | Marlis Schmücke |
| GGertraud KlawitterNot listed | Not listed |
 Roman KaminskiNot listed | Not listed |
| HHans-Joachim LeschnitzNot listed | Not listed |
| HHannelore SchubertNot listed | Not listed |
| JJutta LiebsterNot listed | Not listed |
| BBarbara TeuberNot listed | Not listed |
| IIlona KnobbeNot listed | Not listed |
| DDieter JägerNot listed | Not listed |
 Gerhard RacholdNot listed | Not listed |