Two young parents are desperate to regain more defined roles when they realize that their son does not know his father from his mother.
| Actor | Role |
|---|---|
 Catherine JacobRose Lantier | Rose Lantier |
 Julien GuiomarRené | René |
 Jean-Paul ComartMarc Lantier | Marc Lantier |
 Jean BenguiguiM. Arnaud | M. Arnaud |