Seeking inspiration for his latest horror novel Blake Blackman, a writer from New York, retreats to a remote cabin in the Appalachian Mountains. He is secretly accompanied by his lover Angelica Santoro a book illustrator who he's been having an affair with. She brings her dog along with them. Upon arrival they hear an amber alert on the radio and first learn about the case of several boys missing in the area. Soon after the arrive to the cabin her dog starts acting strange like there's someone or something out in the woods. A twist of fate turns the romantic interlude into an abduction-murder case when Angelica follows a lead to one of the missing boys and she mysteriously goes missing. Blake then becomes the prime suspect of her disappearance."

Overview from themoviedb.org