This is a drama with an amazing concept that had so many possibilities for success but alas it just never quite delivered on its premise. I could see very clearly what the drama was trying to convey but it rarely hit that mark and there are so many missed emotional beats that are wasted. There are scenes which clearly deserve more weight, but they're delivered without punch or significance.

Another thing show does is to deliver monumental truths way after the viewer has already figured it out, so it doesn't have the necessary impact of a bombshell.

The acting is ok, I've been on a quest to find out the reason for Lee MinHo's massive popularity and I can't say that it's because he's a great actor, he's rather wooden and one dimensional but I will say he has a certain charm which is endearing. In this role he's ok but the role would have had more impact with a more powerful actor. Kim Hee Sun is also ok in this, a bit silly at times where the role lacked the wisdom that a person from the future would have. The men from the Woodalchi are entertaining and cute.
The actor who got my notice in this is Park Se Young who played the Queen, she had the right demeanour and energy that the role required.

The music is ok, well placed.

Overall I wish this show could have lived up to its potential.

5 out of 10.