The storyline wasn't complicated. It's basically a love story between the Princess and her new guard. Their story was nice and they have good chemistry. There are also some political schemes but it's also not complicated.
The costumes was really good too. All episodes combined is 1 hour long. It's perfect if you want to watch something short.
It seems like a low budget production, but they definitely make the best out of it.

Overall, not the best drama ever. But it's still worth the time.