About
A boy falls to his death at school, but Ok Chan-mi does not believe that her twin brother, Park Won-seok, committed suicide. Chan-mi transfers to her brother's school, Yongtan High, and meets Ji Soo-heon, who witnessed her brother's death. A "hero," who avenges bullied students, appears at Yongtan High. Chan-mi speculates that it may be connected to her brother and starts looking for this hero.
Cast
Shin Ye-eun
as Ok Chan-mi
Lomon
as Ji Soo-heon
Seo Ji-hoon
as Seok Jae-beom
Chae Sang-woo
as Ki Oh-seong
Lee Soo-min
as Gook Ji-hyun
Chung Su-bin
as Tae So-yeon
Kim Joo-ryoung
as Jin So-jeong
Wooyeon
as Hong Ah-jung
Jin Ho-eun
as Sa Joong-kyung
Yeon Oh
as Lim Seung-woo
Ok Jin-uk
as Ma Nak Joon
Kang Yul
as Park Won Seok / Ok Chan Kyu
Ha-min
as Hwang Soo-na
Jeon Seok-chan
as Gu Ja Taek [Yongtan High School's Teacher]
Moon Ye-jin
as Park Na-rim
Seasons
Episodes
Season 1
Episode 1
Chan-mi transfers to her twin brother's school to find out the truth about his suicide.
Episode 2
Chan-mi learns a shocking truth of a different life that her brother lived.
Episode 3
Soo-heon punishes Sa Jung-kyung and is called a hero by the students, but Chan-mi grows suspicious.
Episode 4
There is a scheme to kick Chan-mi out of school, and Soo-heon advises her to leave.
Episode 5
Won-seok's case is reclassified as a homicide. Chan-mi learns of Won-seok's lie to her.
Episode 6
Soo-heon finds himself in a predicament as he becomes number one suspect of a murder.
Episode 7
Chan-mi gets an unbelievable call, as she holds Soo-heon at gunpoint.
Episode 8
Chan-mi and Soo-heon are convinced that Gi O-sung is Won-seok's killer.
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