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 … Shin Ye-eun, Lomon, Seo Ji-hoon, Chae Sang-woo, Lee Soo-min, Chung Su-bin, Kim Joo-ryoung Added on Disney 2022-12-05. Youtube Trailer