It's actually a brilliant proof of concept between serial killer vs professional killer, and tied within them is the target's father, but the story progression could be done a lot better, and by that I mean a lot. It really needs tons of refinement on its story development because the weaknesses of the script is so evident it ruins the drama, or else the premise could be very effective for a psychopathic crime thriller. As perfectionist as the characters are, this drama just isn't perfect or anything superior.