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.
| Title | Time | |
|---|---|---|
| 1 | Episode 1 | 2022-11-09 |
| 2 | Episode 2 | 2022-11-09 |
| 3 | Episode 3 | 2022-11-16 |
| 4 | Episode 4 | 2022-11-16 |
| 5 | Episode 5 | 2022-11-23 |
| 6 | Episode 6 | 2022-11-23 |
| 7 | Episode 7 | 2022-11-30 |
| 8 | Episode 8 | 2022-11-30 |
| 9 | Episode 9 | 2022-12-07 |
| 10 | Episode 10 | 2022-12-07 |
| 11 | Episode 11 | 2022-12-14 |
| 12 | Episode 12 | 2022-12-14 |
