Riley Shiner is obsessed with a video game based on a real haunted house in his neighborhood. He has played the game so often he knows it by heart, but there's a level he just can't seem to beat. Riley and his twin sister Scarlet know the haunted house is full of monsters and evil spirits, but decide to spend the night there anyway.

After miraculously surviving a tumble through a powerful waterfall, sixteen-year-old Callum Harris awakes from a coma to find himself in a dark and dangerous version of the life he knew.