

On the Line
“Infiltrate the phishing network.”
Seo-joon, loses everything to voice phishing and infiltrates a organization in China to meet Kwak Pro, the designer behind this phishing system.
Where to watch On the Line in United States
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Click a service to open On the Line there. Availability last verified on June 20, 2026.
About On the Line
On the Line is a 2021 Korean-language action, crime and drama film directed by Kim Gok and Kim Sun. The cast is led by Byun Yo-han, Kim Moo-yul, Kim Hie-won. It has a runtime of 1h 49m.
On the Line was produced by Soo Film and made in South Korea. It was released on September 15, 2021. At the box office it grossed around $12 million worldwide.
- Director
- Kim Gok, Kim Sun
- Writers
- Bae Young-ik
- Release date
- September 15, 2021
- Original language
- Korean
- Status
- Released
- Country
- South Korea
- Box office
- $12 million
- Production
- Soo Film
On the Line cast & crew
On the Line was directed by Kim Gok and Kim Sun and written by Bae Young-ik.
The cast features Byun Yo-han as Seo-joon, Kim Moo-yul as Kwak Pro, Kim Hie-won as Lee Gyu-ho, Park Myung-hoon as General Manager, Lee Zoo-young as Kkang-chil, and Jo Jae-yun as Deok-pal.
Behind the camera, the score was composed by Kim Jun-seong, cinematography is by Lee Seon-yeong, and it was produced by Min Jin-soo and Park Ja-myung.
Is On the Line worth watching?
At 1h 49m, it's a standard feature-length watch.
If you enjoy action, crime, and drama, On the Line is worth a place on your watchlist.
How and where to watch On the Line
On the Line isn't currently available on major streaming services in United States. We track availability continuously — add it to your watchlist and we'll keep an eye out.
Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.
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Cast of On the Line

Byun Yo-han
Seo-joon

Kim Moo-yul
Kwak Pro

Kim Hie-won
Lee Gyu-ho

Park Myung-hoon
General Manager

Lee Zoo-young
Kkang-chil

Jo Jae-yun
Deok-pal

Lee Kyu-sung
The Youngest

Won Jin-ah
Mi-yeon

Lee Woon-san
Manager

Ok Ja-yeon
Detective 1

Yun Jong-seok
Detective 2

Jo Hyun-sik
Voice 1
On the Line — FAQs
▸Where can I watch On the Line in United States?
On the Line is not currently available on major streaming services in United States. Availability changes often — check back soon.
▸What language is On the Line in?
On the Line is originally in Korean. Subtitle and dub options vary by streaming service.
▸How long is On the Line?
On the Line runs 1 hours 49 minutes (109 minutes).











