I found the main cast to be quite dislikable. Heo Joon Ho was the only one who had a decent performance. Yoo Seung Ho was overexaggerating with every breath and Kim So Hyun was a plank of wood. Their characters were equally as bad and underdelivering. The most important plot device in the drama was the mask, however, although its introduction was okay, but how they handled it later on was disappo… see more...