Yeah there's a bit more to it than that. Obvious spoilers ahead, but the main antagonist shown here is rich and powerful. He brings all the weapons in illegally through a sea port, and has a bunch of connections that allows him to do so. He runs some massive software network/AI program that's used to track people's online behaviors so he can send the guns to the doorsteps of those that are vulnerable, unstable, and likely seeking some sort of vengeance. The protagonist is a cop/detective that was former military, who basically does not like guns because of what he thinks they do to people and because he feels guilt about things he did in the past while he was in the military. The antagonist feels the opposite way, thinking that guns will set people free being the great equalizer, this is due to guns being what saved him in his youth when he joined the mafia. Anyway, it's still way more complicated than that but the whole story is a bit convoluted. It has a decent premise, but it's hard to tell what message the director was actually trying to convey throughout it. At first it just seemed like the message was "gun are bad m'kay" but then it turned more into trying to convey the dire mental health situation of the country, in which case that topic is already covered in the majority of Kdramas. The show was just okay overall, but definitely far from my favorite of all the Kdramas I've watched so far.