Julien, 17, is wheelchair-bound due to cerebral palsy. Despite their love for him, his family is gradually falling apart under the strain of dealing with his disability. In a bid to bond with his father, Julien challenges him to participate with him in the Ironman race in Nice (French Riviera), a triathlon in which his father has previously competed.
| Actor | Role |
|---|---|
 Jacques GamblinPaul Amblard | Paul Amblard |
 Alexandra LamyClaire Amblard | Claire Amblard |
 Fabien HéraudJulien Amblard | Julien Amblard |
 Sophie de FürstSophie Amblard | Sophie Amblard |
 Pablo PaulyYohan | Yohan |
 Xavier MathieuSergio | Sergio |
 Christelle CornilIsabelle | Isabelle |
 Fred EpaudDoctor Pascal | Doctor Pascal |
 Sandra LeclercqLucie | Lucie |
| LLydia GuillerminYoung IMC claimant | Young IMC claimant |
 Sonia JacobPhysiotherapist | Physiotherapist |
 Laura LardeuxAnne | Anne |
 Yvette PetitMrs. Blanchard | Mrs. Blanchard |
| HHélène Gourdin DohertyBarmaid | Barmaid |
 Raphaël BoyesGas station attendant | Gas station attendant |
 Laurence LaouadiEducator | Educator |
| NNicolas PayanIronman Hospitality Host | Ironman Hospitality Host |
 Lionel BuissonButler | Butler |
 Brigitte ChambonRace doctor | Race doctor |
 Frédéric RestagnoRace official | Race official |
 Géraldine CausseNot listed | Not listed |
| SSteeve GasparinGendarme (uncredited) | Gendarme (uncredited) |
 Christophe RossignonBoard member Ironman (uncredited) | Board member Ironman (uncredited) |