Mal-soon is a tough nana in a shanty town in Busan. Before her, 12-year-old Gong-ju appears with her child sis Jin-ju on her back. Gong-ju claims that she is the daughter of Mal-soon's runaway little girl. Mal-soon's relaxed life ends up being a tinker these little complete strangers, however Mal-soon does not feel bad living with them.