Cheon-ji's unexpected suicide causes her mother Hyeon-sook and older sister Man-ji to be moved into another apartment. Tracking down clues from school, Man-ji discovers that Cheon-ji's best friend Hwa-yeon is behind everything.
Ryu Hyun-sook
Lee Man-ji
Kim Hwa-yeon
Lee Cheon-ji
Choo Sang-bak
Kwak Man-ho
Kwak Mi-ran
Kwak Mi-ra
Hwa-yeon's Mother
Hwa-yeon's Father
Mr. Park
Kim Ji-hoon
Ji-min
Mi-so
Su-kyoung
Woo-ram
Seong-hee
Student
Mr. Im
Teacher
