An apartment in Montmartre. Following an argument with her husband, a young woman decides to go out in the street to clear her mind. Two dredgers accost her, she agrees to have a drink with them. While one arouses the interest of the waitress, she embarks with the other on a long walk. For his part, the husband gives in to the telephone advances of his pretty neighbor and agrees to calm down to take the air with her ... The three couples stroll in the streets of Montmartre.