The drama could have the better.

Kang To Han's motive for wanting to bring the elites down wasn't strong enough. His niece was the cause of the fire not them. It was more like a transfer of aggression. What made more sense was the tenacity at which he went after the Minister.

The drama could have been one of both, the revenge for both the men who had something against the elites/system or the uncovering the reason behind the never ending plague and the dream project.

Also, the drama lacked the emotional connection for the characters. As there was too much going on, paying attention to the romance was almost impossible. Plus, it was so unnecessary for the police officer to die and also faking the death of Kang Yo Han twice was an overstretch.

All in all, the actors were amazing, they made the drama what it is.

I do think the drama if well written would be a gem.