Didier Méreuil, affectionately called Poliche, is in love with Rosine, a beautiful girl, so he does everything to please her. She does not love him, and accepts a seductive airplane pilot who proposes to her. One day, she discovers that the funny man is just a front behind which there is a serious Didier. She will try to make up and live with him - but the gap between them is already too large.
