At the opening of the episode, we see three friends out camping in the woods, at Blackwater Ridge Colorado. It's night and they're in their tents (incidentally, one of them is played by Cory Monteith who now stars in "Glee"). One by one, the campers are attacked by a growling entity, tearing apart the tents and surrounding foliage.
We then return to California where Sam is visiting Jessica's grave.. After moving to place a bouquet of flowers on her grave - in a Carrie-esque moment - a dirt covered hand shoots up to grab Sam and he snaps awake from his nightmare. We learn that after a week of fruitless searching, the brothers are on the road, following the coordinates their father left them in his journal, and heading to Blackwater Ridge, a national park in Colorado. Upon arriving, they speak to a Ranger who is disinclined to believe that anyone is missing. From there, the brothers then pay a visit to 'that Hayley girl' whom the Ranger mentioned as believing her brother was missing. As a close-knit family, Hayley (played by Gina Holden) plans to go looking for her brother and she hires a tracker, Roy (Callum Keith Rennie), to help them. Through research of local missing persons cases, Sam and Dean discover that every 23 years, people go missing at Blackwater Ridge and when Sam examines the last video that Tommy (Graham Wardle) sent his siblings, he discovers an incredibly fast moving shadow in the background which confirms their suspicions that something supernatural is taking place. They then interview the only survivor of an apparent 'bear attack' 46 years ago. Though only a child at the time, Shaw (Donnelly Rhodes) he tells the brothers of how his parents were dragged from their cabin with the roaring creature leaving him with a deeply scarred shoulder and a strong belief that something evil resides in the woods. The next day, the brothers insist on accompanying Hayley, Ben and Roy in their search and the group heads into the woods, where Sam and Dean are soon outed as not being the Rangers the claimed to be but explain they are looking for their father. Soon after reaching the torn apart camp site, their supplies are stolen and Sam and Dean realise that the creature who has taken the campers is a Wendigo. They settle in for the night until the Wendigo circles, tricking Roy into leaving the safety of the camp site and he is killed. In the morning the brother explain what they're up against, a once cannibalistic human, now an immortal superhuman creature that can only be killed with fire. They follow the Wendigo's tracks but the incredibly intelligent creature again tricks them, capturing Dean and Hayley. Sam and Ben follow Dean's trail of M n' M's to an abandoned mine that the Wendigo is using as its lair. Finding the captives alive inside, the brothers then try to get them out but the Wendigo again attacks. Will Sam and Dean be able to torch the creature or will they, along with the others, become the Wendigo's food before another 23 year hibernation? And if they save the campers, where will they go from here to find their father?
A great second episode with an excellent choice in depicting an evil creature (not a spirit like the pilot episode) that they brothers have to hunt and great further insight into the siblings relationship. What I liked about this episode is that is has 'explainers' included in subtle ways so we discover that the show isn't just going to be about the Winchesters searching for their father but also them hunting evil things and saving people along the way. Almost as though the first episode told us something of their past, this second episode seems designed to illustrate the direction the boys future will take. It also shows how the boys feel about their father, Dean with obvious respect, wanting to follow his orders whereas Sam is less obedient, wanting to find Jessica's killer.