Cassandra Webb és una paramèdica a Manhattan que podria tenir habilitats clarividents. Obligada a enfrontar-se a successos que s'han revelat del passat, crea una relació amb tres joves destinades a tenir un futur poderós... si aconsegueixen sobreviure a un present mortal.
Kept locked inside the house by her father, 7-year-old Chloe lives in fear and fascination of the outside world, where Abnormals create a constant threat—or so she believes. When a mysterious stranger offers her a glimpse of what's really happening outside, Chloe soon finds that while the truth isn't so simple, the danger is very real.