In contrast to his successful brother Ernst (Heino Ferch), Robby (Sebastian Koch) dropped out of teacher training early and ekes out a living as a taxi driver. When Ernst emigrates to New Zealand to find love, Robby spontaneously takes on his brother's trainee position.
| Actor | Role |
|---|---|
 Heino FerchErnst | Ernst |
 Michael KauschLichtenfels | Lichtenfels |
| EEdgar M. BöhlkeDirektor Manke | Direktor Manke |
 Sebastian KochRobby | Robby |
 Rudolf KowalskiKilling | Killing |
| OOle PuppeCliff | Cliff |
 Niels-Bruno SchmidtRocko | Rocko |
 Safia Al BagdadiSchülerin | Schülerin |
| TTobias BeyerLohberg | Lohberg |
 Hans-Christoph BlumenbergDr. von Wallischau | Dr. von Wallischau |
| EElke CzischekLilly | Lilly |
| TTina HaseneyCorinna von Wallischau | Corinna von Wallischau |
 Wiebke Adam-SchwarzNot listed | Not listed |
| JJens AlderNot listed | Not listed |
| RRudolf BergmannNot listed | Not listed |
| CCamillo D'AnconaNot listed | Not listed |
| GGerda ErnstNot listed | Not listed |
| IIngrid HoffmannNot listed | Not listed |
 Christine KleinNot listed | Not listed |