Overview
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.
Seasons
4
Total Episodes
58
Status
Ended
First Air Date
1/14/2017
Cast
Lee Ha-na
Song Seung-heon
Son Eun-seo
Kim Joong-ki
Song Boo-gun
Baek Sung-hyun
Kang Seung-yoon
