Paul Dedalus is at a crossroads in his life. He has to make several decisions; should he complete his doctorate, does he want to become a full professor, does he really love his long-standing girlfriend, or should he re-start with one of his other lovers?
| Actor | Role |
|---|---|
 Mathieu AmalricPaul Dédalus | Paul Dédalus |
 Emmanuelle DevosEsther | Esther |
 Emmanuel SalingerNathan | Nathan |
 Marianne DenicourtSylvia | Sylvia |
 Thibault de MontalembertBob | Bob |
 Chiara MastroianniPatricia | Patricia |
 Denis PodalydèsJean-Jacques | Jean-Jacques |
 Jeanne BalibarValérie | Valérie |
| FFabrice DesplechinIvan | Ivan |
 Hélène LapiowerLe Mérou | Le Mérou |
 Michel VuillermozFrédéric Rabier | Frédéric Rabier |
 Roland AmstutzChernov | Chernov |
 Marion CotillardStudent | Student |
 Solenn JarniouPascale | Pascale |
 Philippe DuclosSpiritual Accompanist | Spiritual Accompanist |
| EElisabeth MabyTatie | Tatie |
| PPaule AnnenMrs. Chernov | Mrs. Chernov |
| AAnne-Katerine NormantEsther's Friend | Esther's Friend |
 Vincent NemethFriend | Friend |
 David GabisonDiocese Delegate | Diocese Delegate |
| PPierre-Emmanuel DupireChildren | Children |
| EErwan Le YoudecChildren | Children |
| JJonathan ReyesBob (enfant) | Bob (enfant) |
| PPaolo Sergio RibeiroChildren | Children |
| FFlorence RicardChildren | Children |