Season 1
(2025)
Cast
as Jeong Hae-sung
as Oh Su-ah
as Seo Myung-ju
as Lee Ye-na
as Park Mi-jung
as Im Chung-ha
as Han Seung-jae
as Kim Ho Jin [Informant]
as Bully Student (Eps 2)
Episodes
The Emperor's Lost Gold 8.0
February 21, 2025
After a botched operation puts Hae-sung and his team in serious jeopardy, the only way for him to salvage his career at…
Spooky Stories 8.0
February 22, 2025
Hae-sung comes dangerously close to blowing his cover while searching for the hidden gold in Byeongmun High School's ee…
Ghost Story Riddles 8.0
February 28, 2025
Hae-sung uncovers a crucial clue hidden within the old building, but Chairwoman Seo quickly learns its potential connec…
Joining the Student Council 8.0
March 1, 2025
Hae-sung attends the anti-bullying committee session with a key witness who clears his name, while Dong-min finally fin…
Student Council 8.0
March 7, 2025
Hae Seong and the team grow increasingly concerned that Su A's suspicions could threaten his undercover mission. Howeve…
Hye Seong's Father's Notebook 8.0
March 8, 2025
The school's security guard dies, leaving Hae Seong a notebook belonging to his missing father. The revelation is shock…
The 24th Anniversary of Byeongmun High School 8.0
March 14, 2025
Hae Seong is caught off guard when he recognises Su A's childhood name, Bong Ja, which stirs memories of his first love…
The Plan for VIP Students 8.0
March 15, 2025
After uncovering the possibility of a mole within the NIS, Hae Seong becomes increasingly distrustful of those around h…
The Mathematics Teacher 9.0
March 21, 2025
As Su A recovers in the hospital following the attack during the break-in, Hae Seong and the team uncover the culprit: …
Retribution 9.0
March 22, 2025
To everyone's shock, Seo Myeong Ju returns to the school. Unimpressed by Hae Seong, she expels him and demonstrates her…
The Devastating Truth 8.0
March 28, 2025
The gold bars vanish just as they are within reach, and Seo Myeong Ju suspects Hae Seong has them. In the vault, Hae Se…
Where The Stars Lead 8.5
March 29, 2025
Despite getting badly injured, Hae Seong manages to call Su A and his team. They conclude that the only evidence they c…