Hi there,
I'm looking for a specific Brotherhood AU story - it's a wee!chester story as well.  John took Sammy into town, leaving Pastor Jim with Caleb and Dean. I believe other hunters broke into Pastor Jim's house who were looking for Dean because he had witnessed something.  

Pastor Jim told Caleb to take Dean out into the woods and not to look back.  Dean ended up sick and when the other hunters found the boys, Caleb wouldn't let go of Dean.  Eventually John caught up with them and saved the day.  Thanks in advance!

ETA: Story found.  Thank you!