To be honest, this is the most underrated kdrama i have ever scene.... The amount of it grabbed is very less compared to the level of show.... In this they showed crime thriller story related to North and South korea , where some of the people have special abilities to fly , regeneration etc... this is not some kind of cliche kdrama... It is actually really really good... The editing, vfx looks like it's happening in real or even better... I mean eveb till the end you can't judge or predict the plot of the series.... I rarely ever post reviews but this one definitely needs recognition... They showed elements of love , friendship, grief even if being an action movie and it represented real life scenes like real love , not some lovey dovey stories..... This drama stole my heart for real...