Winchesters at Beacon Hills

Scott notices something over the woods during school, and now he and his pack are being hunted...by Sam and Dean, the Winchester brothers. Thinking Scott's pack is the enemy, they attack, but they are told the truth. Now the Winchesters and Scott's pack have to work together to find out what demon lurks in Beacon Hills. Some Stiles!Whump. SuperWolf! Sorry for crappy summary...R&R