it was just ok... average. this was my 1st action k-drama. i mean, for me, the story and acting has to be such that the the bad guy should make me really believe that they are bad and mean and the good guy should make me believe that he is like superman or something.. but in this tv series, i liked son-hyuk and ki-soo more than jung-woo. personally i did not feel that the female actors had any presence on the screen. the starting was good although slow. but it becomes good after around 12th episode which is after more than half the episodes have finished. overall its good one time watch.