It started innocent enough, at least for the City of Light and Dark, a few dead supers here, a few missing supers there. It was regular life in a city as dangerous as the polarized urban landscape. Then it got more frequent, more public. Supers weren't just killed in their home, under the guise of their alter ego, they were killed in broad daylight- their corpses left in the midday sun to rot.
There was no honor in this. So it could not be another super; No super would ever betray the strict code that enforced the light and the dark.
Then, a few months after it started, it boomed. Something clicked and supers were killed en masse, the slaughter was broadcast across the media and all mediums. The supers went into hiding, the city shut down, crime picked up in both quadrants, the police couldn't cope. The killers and kidnappers seemed to know exactly where their prey had retreated.
This, this was unlike anything the city had ever seen.
Four of the top elite entered into a bunker deep, deep below the surface. Various security protocols, defensive mechanisms, gun turrets, explosives and human guards blockaded the way into the bunker. From this security pigeon hole within the earth they have called on four latent supers, young ones that had not yet developed any powers, that were unknown to the enemy.
But, the way was controversial, for only through trauma could a supers powers become truly active- that was the nature of the gift.
Ethics be damned, the world needed heroes. Vindication was necessary, blood had been spilled.