You wake up on a deserted island to the sound of screaming. There's a note in your pocket, "Pay for your sins." The monsters you dreamed about are real. They're coming. Meet Kat Voss.
She was kidnapped and dumped on an island.
Then someone hung her twelve-year-old sister from a tree like bait.
The voice on the other end of the camera tells her she has one hour to find her sister or else.
The cages are empty.
The monsters are...