Still haunted by the death of her friend who was murdered 19 years ago by the infamous Stigmata serial killer, detective Cha Young-jin (Kim Seo-hyung) is determined to catch the culprit.
She soon joins Master Lee Sun-woo (Ryu Deok-hwan), and they do their best to protect the youth at risk, whose lives could have been changed if they had been surrounded by good adults.
AWARDS
| Year | Award | Category | Recipient |
| 2020 | SBS Drama Awards | Top Excellence Award, Actress in a Miniseries Genre/Action Drama |
Kim Seo-hyung |
| 2020 | SBS Drama Awards | Best Young Actor | Ahn Ji-ho |
