We work the 9/5 to get along. We survive and yet we feel so disconnected by the people around us. I would compare this movie to Fight Club, but a drowned out introspective feminine version. It's a story about a woman working a job, living in a one room apartment, as life happens around her. Of course she doesn't have a murderous compulsion to do violence, but a slow realization that life isn't what it seems and that life is of the habit to keep us from living. If you are into film and understand the lifeless grind of working to survive, this movie hears you.
If you want a solid Korean movie about the working class that has zero frills and tons of humanity, this movie is for you. If you need action and still want some class consciousness, there is always Snowpiercer or Parasite. This one is a much more low key vibe.