Let's start with what's positive about this series: the individual stories of some of the desperate folks, who end up in the slaughterhouse (e.g. the North Korean defector, the woman ready to to anything to survive, the girl giving up her life hoping to contribute to save someone else, ...).
The rest is utter trash. I was fooled by the trailer. Mea culpa, mea culpa, mea maxima culpa.
I hope there is no series 2 (not for me, since I won't watch it anyway, but for the poor souls, who might).