4KHDRDolby Atmos
•TV-MA•2017•4 Seasons•7.3
It's 3 minutes for hearers, but a life for the callers. A crime thriller chasing even the slightest sounds to rescue people's lives calling for urgent help.
Episodes
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Cast & Crew
Lee Ha-na
Kang Kwon-ju
Song Seung-heon
Derek Jo
Son Eun-seo
Park Eun-soo
Kang Seung-yoon
Han Woo-joo
Kim Jung-ki
Park Joong-ki
Song Boo-gun
Goo Gwang-soo
Baek Sung-hyun
Shim Dae-sik
Kim Jae-uck
Mo Tae-gu
Han Jong-hoon
Chad Lee
