Mathieu Grégoire is an esteemed author who lives in Spa with his wife and daughter and leads a carefully structured life. One day, while out in the desolate landscape of the High Fens he meets a mysterious woman whom he calls 'Belle'. An obsessive passion is kindled in Mathieu and in a short space of time he loses all control over his existence.
| Actor | Role |
|---|---|
 Jean-Luc BideauMathieu Grégoire | Mathieu Grégoire |
 Danièle DelormeJeanne | Jeanne |
 Adriana BogdanBelle | Belle |
 Roger CoggioVictor | Victor |
| RRené HainauxDeputy | Deputy |
| SStéphane ExcoffierMarie | Marie |
| JJohn DobrynineJohn | John |
 Valerio PopescoStranger | Stranger |
 François BeukelaersFalse Stranger | False Stranger |
| AAndré BlavierVincent | Vincent |
| MMarc AudierMan at café | Man at café |
 Arlette EmmeryNarrator | Narrator |
| SSuzanne GohyMother | Mother |