S01E03: A Victim of a School Violence
Do-gi goes undercover as a high school substitute teacher after receiving a call for help from a student who is being severely bullied.
Previous Episode 
Season 1
Do You Want to Take Revenge?
S1E1 / 09 Apr 2021
Do-gi Meets Ju-chan
S1E2 / 10 Apr 2021
A Victim of a School Violence
S1E3 / 16 Apr 2021
Teacher vs Students
S1E4 / 17 Apr 2021
The Evil Businessman
S1E5 / 23 Apr 2021
Into the Strategic Planning Team
S1E6 / 24 Apr 2021
An Untimely Goodbye
S1E7 / 30 Apr 2021
The Vacation Home
S1E8 / 01 May 2021
The Voice Phishing Scam
S1E9 / 07 May 2021
Mr. Wang and Madam Lim
S1E10 / 08 May 2021
Tracking Down the Missing Murder Victim
S1E11 / 14 May 2021
A Colleague's Funeral
S1E12 / 15 May 2021
A Prisoner Exchange
S1E13 / 21 May 2021
The Rainbow Transport Team In Danger
S1E14 / 22 May 2021
Rainbow Transport Decide to Disband
S1E15 / 28 May 2021
One Year Later
S1E16 / 29 May 2021
Season 2
The Missing Son
S2E1 / 17 Feb 2023
Back in Business
S2E2 / 18 Feb 2023
The Trot Singer
S2E3 / 24 Feb 2023
Sang-gi’s Prison
S2E4 / 25 Feb 2023
Feel Consulting
S2E5 / 03 Mar 2023
The Evil Uncle
S2E6 / 11 Mar 2023
The SunBaek Cult
S2E7 / 17 Mar 2023
Beating a Cult with a Cult
S2E8 / 18 Mar 2023
The Surgery Malpractice
S2E9 / 24 Mar 2023
Jeil Chakhan Factory
S2E10 / 25 Mar 2023
The Late Kim Do-gi
S2E11 / 31 Mar 2023
The Playground of Evil
S2E12 / 01 Apr 2023
Do-gi Crashes the Party
S2E13 / 07 Apr 2023
Ha-joon's Defeat
S2E14 / 08 Apr 2023
Ha-joon Versus Do-gi
S2E15 / 14 Apr 2023
The Final Client
S2E16 / 15 Apr 2023
Season 3
A Call From Japan
S3E1 / 21 Nov 2025
A Man Who Trusts No One
S3E2 / 22 Nov 2025
The Faulty Taxi Driver
S3E3 / 28 Nov 2025
Reap What You Sow
S3E4 / 29 Nov 2025
An Old Friend
S3E5 / 05 Dec 2025
Fragments of Memory
S3E6 / 06 Dec 2025
The Final Blow
S3E7 / 12 Dec 2025
The Final Boss
S3E8 / 13 Dec 2025
The Trap
S3E9 / 19 Dec 2025
The Dirty Truth
S3E10 / 20 Dec 2025
Scam or Be Scammed
S3E11 / 26 Dec 2025
The Suspicious Island
S3E12 / 27 Dec 2025
Knowing Your Enemy
S3E13 / 02 Jan 2026
Undermining Their Foundation
S3E14 / 03 Jan 2026
A Bird’s Nest
S3E15 / 09 Jan 2026
The Last Operation
S3E16 / 10 Jan 2026
Lee Je-hoon
Kim Do-ki
Kim Eui-sung
Jang Sung-cheol
Pyo Ye-jin
Ahn Go-eun
Jang Hyuk-jin
Choi Kyung-goo
Bae Yu-ram
Park Jin-eon
Seol Ji-won
Episode In-mul Y
