At the airport, where he has just left his childless wife Sophie who is off to visit relations, he picks up Julie, a teenager who has nowhere to sleep.

When the rightly suspicious Sophie asks what has led her to look up her father in the middle of the night after all these years, Julie claims that she is pregnant.

Then Sophie's suppressed maternal instincts all well up and nothing is too much for her pretty stepdaughter and future step-grandchild, but she does insist that Julie tell her mother where she is.

Everybody is horrified that the suave Stéphane should have consorted with this harridan before the elegant Sophie, but after a few more vodkas she passes out and is put to bed.

In the morning, Stéphane discovers that Julie has slipped off to a conference where Rousseau is speaking and in fury breaks it up to reclaim his little girl.