This show had an interesting premise with people trying to figure out who they are and how they are connected over lifetimes. The real-life historical incidents could have given it some interesting and valuable dramatic aspects as well as relational intersections between the characters.

However, the show just didn't deliver. The beginning was littered with silly, over the top misunderstandings that lead all the characters to dislike each other. Furthermore, the characters are one dimensional and flat. They never share enough with us through dialogue or action, about who they are, what they think, and the challenges they face. Then suddenly, all the characters start to care about each other but we're not sure why. At this point the baddies start doing bad things, but we never really figure out the depth of why either. And then finally, there are a bunch of melodramatic scenes as they sacrifice for each other, in sort of a love triangle version of Romeo & Juliet.

The relationships between the characters never solidified. The historical story could have been so much richer, depicting the danger and risks they were taking and the suffering they were living. And then in the present day, we could have seen the characters overcome their personal challenges and grow their relationships and support each other.

Instead, there is not much for us to care about because there is so little depth. It was a waste of time.

And finally, the most memorable thing I have to comment on in this drama is that Yoo Ah In's super short haircut in the present day was completely the wrong style for him. His longer style in the historical scenes was spot on.