The concept itself is almost a fantastic storyline. The way a powerfull CEO ends up trapped in North Korea makes no sense but creates a perfect and original setting. And i loved it so much.
The first 7/8 episodes are pure sweetness. We witness the way a woman who's used to the fast pace of a consumer society adapts herself to a slower life focused on essentials and community. And far from all her obligations as a buisness woman, she discovers herself again, her capacity to trust and to love.
The leads are incredibly good at mixing the sweet and sour of an impossible romance and remind us of the existing reality : a nation devided in two. The comedy glimpses are also a much needed and well introduced relief, often brought by the hilarious secondary characters.

But at some point, towards the middle of the story , it felt like each episode was put on repeat.
She has to leave, but they don't wanna be separated, the bad guy comes at them, he saves her, they cry. Next episode, repeat.
For 6 episodes or more, i felt like the main characters had only one facial expression : crying, and only said one thing : "i dont want you to be hurt because of me, live well. "
There was no real storyline or at least the one from the beginning got kinda repetitve and lost its purpose.

I got into this drama without expectations at all and was mind blown by the beginning, thinking i found the drama of the year and got so disappointed toward the end.

I think it's still worth watching, at least for the beginning and also for the side characters who remain very entertaining.