Ten years old Ernst and his father Alfons are traveling to the family event on their bikes.
| Actor | Role |
|---|---|
| JJürgen HuthAlfons Markgraf | Alfons Markgraf |
| JJan King LauschusErnst Markgraf | Ernst Markgraf |
 Petra HinzeMargot Markgraf | Margot Markgraf |
 Fred DelmareDixi-Mensch | Dixi-Mensch |
 Wolfgang GreeseErfinder Kieselmeier | Erfinder Kieselmeier |
| KKareen SchröterSusanne Markgraf | Susanne Markgraf |
| AAndreas HirschfeldNot listed | Not listed |
| UUrsula StaackNot listed | Not listed |
 Marga LegalNot listed | Not listed |
| CChrista ScheunerNot listed | Not listed |
 Jaecki SchwarzNot listed | Not listed |
 Viola SchweizerNot listed | Not listed |
| HHerbert Wolf KrauseNot listed | Not listed |
| HHorst BeeckNot listed | Not listed |
 Steffie SpiraNot listed | Not listed |
 Johannes WiekeNot listed | Not listed |
| GGerd BlahuschekNot listed | Not listed |
| WWilhelm GröhlNot listed | Not listed |
 Ernst-Georg SchwillNot listed | Not listed |
 Arnim MühlstädtNot listed | Not listed |