Studio Hifive

Upon hearing the release of the murderer, who killed the youngest daughter, Gyeong-ju, four women—her mother and three sisters—set out on a family trip to Gyeongju, driven by their thirst for revenge.

Yujeong, who works as a night shift nurse at a general hospital's cardiology department, is now told that her 12th-grade younger sister, Kijeong, has been arrested by the police as a suspect in an infant abandonment case. Only then does Yujeong start to make desperate efforts to rescue her sister.