In-young (18), who suffers from a congenital respiratory disease, is haunted by nightmares following her mother"s death. To cope with the pain, she steals other people"s belongings, eventually ending up in a juvenile detention center. After her release, In-young transfers to a school in the countryside and moves in with her aunt. There, she meets Eun-ha (18) and feels a subtle, magnetic attraction toward her.