Geum-Bok (Shin Da-Eun) is ashamed of her mother (Jeon Mi-Sun) who works as a street cleaner. Her mother, as a single mother, has worked hard to support Geum-Bok. Geum-Bok's feelings for for her mother begin to change. On their first trip, Geum-Bok's mother disappears and Geum-Bok is now all alone.