The narrative centers around Agnes (played by Sylvana Krappatsch), a scientist trapped in an uninspiring routine. Her husband writes crime fiction and manages the household, but a mutual lack of passion has settled over their marriage.

At the helm of Die Besucherin is Lola Randl, a director with a distinct and uncompromising vision. As her first feature film, it announced a significant new voice in German cinema. Randl, who also wrote the screenplay, adopts a style that prioritizes observation over explanation. The film does not hold the viewer's hand; it refuses to provide easy answers or melodramatic plot points. Instead, it lingers on the small, telling details of daily life, trusting its audience to piece together the emotional puzzle themselves.

It is very common for the acclaimed American film , which gained wide release in Europe in 2008, to be translated as "Die Besucherin" in German markets (referencing the female protagonist Zainab or the theme of visiting).

Agnes is a successful radiologist trapped in a monotonous routine. Her husband is an uninspired crime fiction writer who handles the domestic duties while their relationship quietly erodes.

A visual-heavy feature examining how the physical space of the abandoned apartment becomes the movie's most important character.