What can I say about this drama.... If you want something hardcore, frightening, and realistic then this is the show for you. I sat on the edge of seat from beginning to end , to the point where I didn't want to shut down my computer and go to sleep, I wanted to keep watching. This show was I think one of the best all time shows and that includes all my American shows. Starting from episode one the actors were phenomenal, Kim Young Kwang's performance was outstanding!! I think that watching this scary natural disaster drama pushed my faith in humans to the breaking point, showing that there is good in all of us to withstand any occurrence. Action packed, sad stories and a few laughs. This is a show I strongly recommend