Lui eats a dangerous berry, despite Plop's warning, and grows as tall as a human. The gnomes get angry, so Lui runs away crying and gets lost in the forest. Before he knows it, he ends up in the city, causing chaos wherever he comes..
| Actor | Role |
|---|---|
 Walter de DonderKabouter Plop | Kabouter Plop |
 Chris CauwenberghsKabouter Lui | Kabouter Lui |
 Agnes de NulKabouter Kwebbel | Kabouter Kwebbel |
 Aimé AnthoniKabouter Klus | Kabouter Klus |
 Nicolette van DamLisa | Lisa |
 Walter BaelePolitieagent | Politieagent |
 Pol GoossenBuschauffeur | Buschauffeur |
| SSjarel BranckaertsBakker | Bakker |
 Britt van der BorghtSnackbar medewerker | Snackbar medewerker |
| LLutgarde PaironRita | Rita |
 Annemarie PicardKlant | Klant |
| HHarry van BarneveldUitsmijter | Uitsmijter |
| AArnold VanderlydeUitsmijter | Uitsmijter |
 Sam GoorisPapa | Papa |
 Kelly PfaffMama | Mama |
 Kenji GoorisKind | Kind |
 Shania GoorisKind | Kind |