Boys are usually busy playing "Indians", but when their uncle decides to rent part of their home to a Doctor Höflin, they took an oath to cast him out with a series of pranks.
| Actor | Role |
|---|---|
 Ernst von KlipsteinTierarzt Dokter Höflin | Tierarzt Dokter Höflin |
 Karin HardtMartina Holk | Martina Holk |
 Sonja ZiemannIrmgard Holk | Irmgard Holk |
 Gunnar MöllerGünther Holk | Günther Holk |
| PPaul HenckelsProfessor Sedelmann | Professor Sedelmann |
 Lutz MoikOtto Holk | Otto Holk |
 Erna SellmerKöchin Anna | Köchin Anna |
 Ursula HerkingNot listed | Not listed |