A male student's body is found at school. Authorities assume that the student killed himself in a fall. Other students at the school hold a trial to uncover the truth behind his death.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2016-12-16 | 65 min |
| Season 1 | Episode 2 | Episode 2 | 2016-12-17 | 65 min |
| Season 1 | Episode 3 | Episode 3 | 2016-12-23 | 65 min |
| Season 1 | Episode 4 | Episode 4 | 2016-12-24 | 65 min |
| Season 1 | Episode 5 | Episode 5 | 2017-01-06 | 65 min |
| Season 1 | Episode 6 | Episode 6 | 2017-01-07 | 65 min |
| Season 1 | Episode 7 | Episode 7 | 2017-01-13 | 65 min |
| Season 1 | Episode 8 | Episode 8 | 2017-01-14 | 65 min |
| Season 1 | Episode 9 | Episode 9 | 2017-01-20 | 65 min |
| Season 1 | Episode 10 | Episode 10 | 2017-01-21 | 65 min |
| Season 1 | Episode 11 | Episode 11 | 2017-01-27 | 65 min |
| Season 1 | Episode 12 | Episode 12 | 2017-01-28 | 65 min |
| Writing | Miyuki Miyabe | Novel |
| Directing | Kang Il-soo | Director |
| Production | Kim Jong-sik | Producer |
| Writing | Kim Soo-ho | Screenplay |
| Directing | Han Hyun-hee | Director |
