Jeanne Dielman (Delphine Seyrig), the widowed mother of a teenage son, Sylvain (Jan Decorte), ekes out a drab, repetitive existence in her tiny Brussels apartment. Jeanne's days are divided between humdrum domestic chores -- shopping, cooking, housework -- and her job as an occasional sex worker, which keeps her financially afloat. She seems perfectly resigned to her situation until a series of slight interruptions in her routine leads to unexpected and dramatic changes.