A couple who were as close as family to Junghwan passed away suddenly in a tragic car accident. At the funeral, unable to turn away from the plea of their daughter, Dagyeong—a middle schooler left all alone—Junghwan brings her into his home. The family members each greet this new guest with vastly different emotions: Mingyu, the eldest son who is awkward around Dagyeong due to a past incident during a trip; Seongyu, the younger son who is the same age as her; Sera, the wife who had always longed for a daughter; and Junghwan himself, who finds Dagyeong’s presence unexpectedly unsettling. However, once Dagyeong begins staying in the house, Junghwan’s family starts to undergo a subtle transformation, and a strange tension begins to flow between them...
A psychological thriller that offers a modern twist on the 'Fox Sister' (Yeowunui) folk legend, it directly subverts the narrative of the young girl as a 'fragile victim.'