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.
4 Seasons
StatusEnded
First Aired2017-01-14
Last Aired2021-07-31
Created byMa Jin-won
NetworkOCN
Seasons4
Episodes58
Where to Watch
Stream
Streaming availability for US region, via JustWatch.
