Imagine a world where all of the creatures from horror stories were real. Imagine living in an enclosed space with those that were created and molded specifically to make you their prey. Imagine waking up and discovering that you weren't as alone in this world as you once thought, that you weren't the superior creature; you weren't the top of the food chain. The humans, twenty seven years ago, discovered that there were creatures that shared the earth with them. Those that weren't of their blood were called 'monsters.' Taking a preemptive strike against the monsters they captured them. They tested them; they abused them. The humans claimed that they were testing them so that they could learn more about them; that was a lie.
Imagine a world where you can't go to sleep at night because you're afraid that a creature, only heard of in horror stories, might sneak through your bedroom window and take your life. Imagine a world where you can't go to sleep at night because you're petrified that your neighbor will suddenly forget the Reservation's unifying bond; imagine fearing your enemy at the same time.
In times as dark as these, be careful where your loyalties lie. The wrong choice won't land you with a slap on the wrist; it will be your demise.