Peter and Bronny Taylor go on a trip to the Grand Canyon with their daughter, Stephanie, and Mikey, their autistic son. Mikey discovers a small cavern, where he finds rocks with glyphs on them. He takes the rocks, keeping a secret untold. When the Taylors return home, strange things begin to happen..
The Darkness
A family unknowingly awakens an ancient supernatural entity on a Grand Canyon vacation, and must fight for survival when it follows them home.
