Marie is the cleaning lady every well-off family would love to have. What makes her all the more valuable is her relationship with the lady of the house, Greta, who suffers from slight dementia. Totally in the dark about how to handle a dementia-afflicted person, Marie moves into Greta's home and, through her sharp observational skills, begins to learn what it's like to live in two worlds simultaneously. Marie enjoys Greta's childish-motherly affection and feels needed. But what will she do when Greta passes away?