A psychiatrist and her husband host a dinner for their neighbors when she notices that someone is observing them from outside, but the others just dismiss her fear as mere exhaustion from overwork.

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.