Episode 1
Trigger – Season 1
When a shocking mass shooting shatters Korea's calm, Lee Do races to stop the violence — then realizes the threat of illegal guns is just beginning.
Cast
Park Yoon-ho
Park Gyu-jin
Kim Nam-gil
Lee Do
Kim Young-kwang
Moon Baek
Moon Seong-hyun
Teenage Moon Baek
Park Hoon
Koo Jeong-man
Kil Hae-yeon
Oh Gyeong-suk
Kim Won-hae
Cho Hyeon-sik
Woo Ji-hyun
Yoo Jeong-tae
Jung Woong-in
Yoon Won-cheol
Cho Han-cheul
Captain Joo
Ahn Se-ho
Kim Deok-hyeon
Cha Rae-hyung
Seo Hyeong-ju
Jang Dong-ju
Jang Jeong-woo
Son Bo-seung
Seo Young-dong
Hong Min-gi
Kang Seong-jun
Sun Woo-sun
[Psychiatrist]
Kang Chae-young
Park So-hyeon [Nurse]
Kong Hyun-ji
Cho Se-yeong [Hyeon-sik's Daughter]
Do Eun-bi
Ko Ji-yeong [Water Purifier Coordinator]
Lee Suk
Jeo Won-sung [Sex Offender]
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