High school athlete Hanju lives in poverty but happily with her grandfather, a herb gatherer, and younger brother, who has a lower back disability. Hanju, who was rushed to the emergency room after his grandfather had been involved in an accident, visits a pastor who took care of his family.

The awkward, distant, and wounded three sisters gather at their hometown for their father's birthday. However, on the day of the party, there is a big mess because of their little brother Jin-seob's abnormal behavior, and the past of the three sisters slowly reveals.