This drama is very entertaining but it fails to solve its core plot and execute it on screen. This drama was clearly written around its Joseon-era arc: a fine tale of a murder mystery about the princess. The crown prince then gets sent 300 years into the future and slowly realizes the same events happening again between two warring reincarnated sisters. While it executes the Joseon storyline in spades, it failed miserably to mimic it in the modern-era arc.

The villains are so horribly written. They're too lucky too, getting numerous opportunities to foil each and every plan of the protagonists. The protagonists are also mumbling idiots who are too trusting and get duped by the villains time and time again. You will wince and groan by the choices the villains and protagonists make during pivotal moments in the modern-era arc that by the time episode 17 comes around it reaches fever-pitch and becomes an unintentional comedy. I found myself laughing and shaking my head in disappointment numerous times at otherwise very intense, serious moments from episode 17 onwards. By episode 19 I was so ready to grade this drama a 5. I would've graded it lower if not for the first few episodes where I genuinely had a few laughs from its fish-out-water antics.

But then episode 20 came and it single-handedly redeemed the show to a degree. The episode literally pulled this drama up from the pile of shit it wanted to stay in. It was clear to me then that the writers wrote the Joseon-era arc first- which was finely constructed- but then had the problem of bringing the same similar events to the modern-era arc. And what they came up with was an utter mess. Episode 20 alone is worth the watch but it was too little too late.