After the murderous events that left her father (Rob Lowe) dead, 15-year-old Emma (McKenna Grace), a seemingly typical teenaged girl, is now living with aunt Angela (Michelle Morgan) and navigating high school. But the darkness can only be hidden for so long, especially when Angela’s husband Robert (Benjamin Ayers) begins to suspect Emma may not be as innocent as she appears, and a new girl at school, Kat (Ella Dixon), seems to know Emma’s secrets from the past. Left with no choice, Emma slips back to her old ways to take care of her enemies by any means necessary.