HELP!!! Fic search. SPN fandom

In the last week or so, I stumbled across this SPN fanfic where Sam was being helped by an Angel. From what I gathered while skimming through, he ends up in an alternate timeline/universe where he, Sam, died when he was six years old. He has to convince this timeline's Dean that they're really brothers and that he's there to help/needs help.

I was extremely interested in reading this and thought that I'd saved it, or at least bookmarked it. In fact, I'm sure that I shared the link with someone (not that I can remember who now). The only problem is that, now that I've finished what I was already reading and want to read this one, I can't remember the title or author or even where I saved it.

Any help that anyone could give me would be greatly appreciated.