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.
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Top cast
Lee Ha-naKang Kwon-ju
Song Seung-heonDerek Jo
Son Eun-seoPark Eun-soo
Kang Seung-yoonHan Woo-joo
Kim Jung-kiPark Joong-ki
Song Boo-gunGoo Gwang-soo
Baek Sung-hyunShim Dae-sik
Kim Jae-uckMo Tae-gu
Han Jong-hoonChad Lee
