The storyline is exciting and tense, a taxi driver who is kind and loves his family meets a mysterious man who has no empathy and no fear, on the other hand there is a mother who lost her child, believing that her child was a murder victim.
The first episode is tense, there is no need to doubt that the senior actor's acting is very natural, the mysterious man has great character in playing his role, the struggle of a mother investigating the death of her child is very touching. The story is difficult to predict and there are some scenes of violence that are quite scary because there are a lot of horrors that are quite sadistic and emotionally draining in this series, but for those who like tense thriller stories, this is highly recommended and worth watching.