When a thunderous explosion rocks an idyllic cabin resort in the Great Smoky Mountains, animals and humans alike begin to act strange. Jim, along with his wife Laura and son, Sam, are cut off from the outside world, but they soon realize the true nightmare is just beginning. Deep in the snow-covered woods, something is waiting. The creature calls itself Apex, and it's a traveler. Reading the minds of those around it, Apex brings the terrifying fears hidden in the human psyche to life with a singular purpose: to kill any that stand in its way. Locked in a fight for their lives, Jim and his family must uncover the truth behind Apex, and stop the creature from wreaking a horrifying fate upon the rest of the world.