Jade, a headstrong young woman, lives in an irradiated wasteland. She struggles each day to protect her younger sister Pearl, a sweet girl who was born mutated. Their life is tough, but Jade is determined to survive. One day, Jade returns from a supply run and finds her sister missing. She knows one of two groups is to blame: the fascist society that lives underground, scorning the sun and all mutants, or a fellow scavenger on the surface, acting out of depravity or desperation. Jade is willing to risk everything to save Pearl, including her own life and morals. With her gas mask fixed tight, and a heavy chain in hand, she sets off on a mission of vengeance. If she fails, Pearl will die.

Flynn, a quiet but determined young man, lives in an underground road tunnel with thousands of others. The world outside is a wasteland, and the radiation of the sun can mutate genes. But Flynn has a secret: he himself has a hidden mutation, an erratic ability to kill with his mind. When a woman finds Flynn claming there are others like him, with strange and powerful mutations, he must make a choice—does he continue to live in the shadows, or will he risk his life to save his own kind? One thing is certain: if he fails, there will be retribution. The path to freedom is fraught with danger. Everyone he loves may die.