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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.
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First episodes — open an episode to play
E1Episode 1
65 min
Chan-mi transfers to her twin brother's school to find out the truth about his suicide.
E2Episode 2
62 min
Chan-mi learns a shocking truth of a different life that her brother lived.
E3Episode 3
63 min
Soo-heon punishes Sa Jung-kyung and is called a hero by the students, but Chan-mi grows suspicious.
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