Two sisters have to deal with the traditional issues of growing up and the unusual problem of caring for an unstable father in the drama Qui Plume La Lune? As children, Suzanne and Marie are thrown into the world of adult responsibilities when their mother dies of cancer and their father, Lucien (Jean-Pierre Darroussin), is emotionally devastated by the experience. As time passes, Lucien's melancholy manifests itself in increasingly eccentric behavior, which the girls are forced to manage. As Suzanne and Marie grow into adolescence, they become more interested in their own lives, and Marie has a brief fling with a boy her age while the family goes on vacation. Lucien is hurt and outraged by this, and Marie soon leaves school and home to strike out on her own. Suzanne now finds herself torn between her concern for her father's well-being, her frustration at having to look after him as his condition worsens, and a desire to live her own life; the latter finally wins out when she marries and moves on, with Lucien turning to his elderly mother for solace. Suzanne is played as a child by Laetitia Ferreira and as an adult by Garance Clavel; Marie's respective roles are played by Angele Guedra and Elsa Dourdet.