Once Upon The Damned

This is a crossover of two series that diverges from the point when Dean Winchester awoke as a demon. While Dean is on a joyride with Crowley, their trail goes cold in Maine. Sam, with the aid of Castiel, is searching for his brother with the intent to save him or kill him. As he follows his brother's trail, what will he find as he crosses the town line of Storybrooke, Maine?