A paramedic unit responds to a house call, only to find the entire family brutally mutilated and very dead.
The junior paramedic is shaken, but she has a job to do. She hears a voice upstairs and goes to investigate.
She finds a boy hiding in the closet. He asks her to close the windows, so that the monsters don’t get in.
But what’s the point, when the monster was inside all along?