The four high school girls, each of whom has their own personality and appearance, happen to witness the four twins' suicide while preparing for the choir competition.
Hyun Sook-haeng
Do Ok-hee
Noh Susanna
Do Ok-seung
Jung Hyun
Do Ok-ban
Min Se-yeon
Do Ok-hye
Lee Jong-pil
Reporter
Kang Jin-ah
Director
Writer
