Young Koko has just moved with his parents from his idyllic countryside home to a big city. There, with the help of his new friends and a neighbour he investigates the mysterious case of a dead old man who used to live in the flat he has just moved into. Koko and the Ghosts is a family film based on a popular Croatian series of young-adult novels written by Ivan Kušan.
| Actor | Role |
|---|---|
| AAntonio ParačKoko | Koko |
| NNina MiletaMarica | Marica |
 Kristian BonačićZlatko | Zlatko |
| FFilip MayerMiki | Miki |
| IIvan MaltarićBožo | Božo |
| OOzren GrabarićJosip | Josip |
| DDijana VidušinNeda | Neda |
 Predrag 'Pređo' VušovićVincek | Vincek |
 Franjo DijakDrago | Drago |
| AAlmira OsmanovićRuža | Ruža |
 Olga PakalovićKatarina | Katarina |
| RRakan RushaidatInspektor Krivić | Inspektor Krivić |
| SSaša AnočićVladislav Brnčić | Vladislav Brnčić |
| DDamir OrlićLjubo | Ljubo |
| TTatjana BertokDijana Brnčić | Dijana Brnčić |