Twelve-year-old Luuk Bos has always believed that his father is the Strongest Man in the World. His mother Dorien, who raised him on her own, used to tell him the most wonderful stories about it. During a visit to a local Strongest Man competition, he meets a participant, René Doornbos, who, like him, has red hair. Luuk thinks he has found his father.
| Actor | Role |
|---|---|
 Bas van ProoijenLuuk | Luuk |
 Suzan BoogaerdtDorien | Dorien |
 Loek PetersRené | René |
 Yenthe DirksMinke | Minke |
 Dick van den ToornLodewijk | Lodewijk |
 Gonny GaakeerLydia | Lydia |
| FFinn PoncinStef | Stef |
| BBorre StokdijkKleine Luuk | Kleine Luuk |
| JJarno HamsEelco Nijenhuis | Eelco Nijenhuis |
 Korneel EversOmroeper | Omroeper |
| LLianne ZandstraMoeder Minke | Moeder Minke |
 Femke LakerveldEx van René | Ex van René |
 Tessa du MeeBuurvrouw | Buurvrouw |
| TThijs FeenstraVoetbalvader | Voetbalvader |
| EEllik BargaiMentor | Mentor |
| MMartin van TulderBiologieleraar | Biologieleraar |
| GGer ApeldoornAutoverkoper | Autoverkoper |
| RRuud DrupsteenMan met hondje | Man met hondje |
| SSem MolOuderejaars 1 | Ouderejaars 1 |
| MMitchell DobbelaarOuderejaars 2 | Ouderejaars 2 |
| RRobert Ruigrok van der WerveBroer Minke | Broer Minke |
| BBram ZoontjesZoon Lodewijk | Zoon Lodewijk |
| MMarjolein LagenburgDochter Lodewijk | Dochter Lodewijk |
| PPieter MorseltZoon voetbalvader | Zoon voetbalvader |
| DDavide OccelliJonge René | Jonge René |
| JJogchem van HoffenGymleraar | Gymleraar |