Six-year-old Jin (Hee Yeon Kim) and her younger sister Bin (Song Hee Kim) live on the edge of disaster, but they are not aware of it.
In the small apartment where they reside with their single mother, the menacing sounds of the outer world, disturb their precarious cocoon.
One day (ominously foreshadowed by Jin wetting the bed), their mother packs all their belongings. For Jin, the days of going to school are over.
Mommy is gone, leaving her and Bin in a hostile home with their alcoholic Big Aunt (Mi Hyang Kim) and a piggy bank to slowly fill with tinkling coins and shining hopes.
Once the bank is full, their mother will be back.
Starring: Hee Yeon Kim, Song Hee Kim, Soo Ah Lee, Mi Hyang Kim