In the heart of the most notorious correctional facility, Black Hills, the walls echo with more than just despair-they tremble with the sounds of illegal fight matches. Inmates are pitted against each other by guards, who stream the brutal brawls.

In 2040, a devastating lung disease has left the world fractured while governments enforce surveillance and control. Amid this unrest, a group of freedom fighters organizes a protest against new pandemic laws. But as the movement grows, shadowy figures begin eliminating people on its margins. Their motives are unknown, their presence undeniable - and their violence threatens to eclipse the resistance itself.