8.061 minSeason 1 • Episode 12
LatestWhen a local Inn Keeper’s daughter disappears Cha Yeon-ho reaches out for help. The old TCI gang takes vacation to assist him. The team is finally promoted with exception of Chief Jeong who had rendered his resignation. When Chief Justice Shin So-jung (Park Ji-young) is promoted to Director National Office of Investigation, she seeks out Chief Jeong to reestablish the TCI.
A drama about Cha Yeon-ho, a reasonable individualist from KAIST, and Min So-hee, a traffic investigation ace with cool judgment and warm sensitivity at the Traffic Crime Investigation (TCI).
Acting
Lee Min-ki's deadpan nerd energy is criminal-level charming.
Writing
Turns traffic violations into genuinely heartbreaking human stories.
Production
Car chase choreography that respects physics AND drama.
Creator
Park Joon-woo
Lee Min-ki
Cha Yeon-ho
Kwak Sun-young
Min So-hee
Heo Sung-tae
Jeong Chae-man
Lee Ho-cheol
Woo Dong-gi
Choi Moon-hee
Eo Hyeon-gyeong
Bek Hyun-jin
Koo kyung-mo
Kim Kwang-shik
Go Jae-deok
Oh Dae-seok
So Byeong-gil
Yoo Seung-mok
Min Yong-gun
Ko Eun-min
Lee Hyun-soo
Ha Sung-kwang
Lee Jung-sub
Lee Yoo-jun
Chairman Yang Seok-chan
Han Sang-jo
Han Kyung-soo
Kang Ki-doong
Pyo Jung-wook
Heo Jeong-do
Pyo Myun-hak
Trivia, insights & behind the scenes
The show weaponizes mundane infrastructure — traffic lights, road markings — as storytelling devices, making the invisible violence of urban planning viscerally personal.
Heo Sung-tae (Jeong Chae-man) was cast 48 hours before filming after the original actor withdrew; his improvisational gruffness became the team's accidental anchor.
KR
