Living under a perfect, beautiful sky, protected from the sun and its burning rays... who'd appreciates something that’s just the everyday norm?

But what happens when you suddenly wake up in a place where you're forced to live beneath an artificial sky—constantly fearing mutants, disease, and lethal monsters?

Yet, that isn't even the scariest part. The real nightmare is having to smile at the true monsters disguised as human... knowing you can’t say a word because they're the ones who holds the real power.