Story did not make sense most of the time, but Cast and acting really made it worthy to watch! Choi jin hyuk never disappoints and he did fantastic job in this drama as well, but Park Sung Woong (Antagonist) totally stole the spotlight for me, his acting left me speechless, even though it was my first time seeing him in a drama. rest of the cast was great too. I really loved AI/Tech side of the show, it was cool to see heros with different AI parts. It was mostly Action, thriller show but there was many wholesome, heartwarming scenes which portrayed friendship between main leads. I would say, if you like action, good quality fighting scenes and eye candy *wink wink* definitely go for it!