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.
Overview
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Top Billed Cast
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Lee Ha-na
Kang Kwon-ju (58 episodes)
Son Eun-seo
Park Eun-Soo (58 episodes)
Kim Joong-ki
Park Joong-Ki (42 episodes)
Song Boo-gun
Goo Gwang-Soo (42 episodes)
Baek Sung-hyun
Shim Dae-Sik (30 episodes)
Lee Jin-uk
Do Kang-woo (28 episodes)
Kim Woo-seok
Jin Seo-Yool (28 episodes)
Kim Ki-nam
Yang Choon-Byung (28 episodes)
Jang Hyuk
Mu Jin-hyuk (16 episodes)
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