Stupid ass washing machine...
This is an incredibly good Halo Wars story, starting at the Legendary ending to the game, where Serina wakes the Captain from cryo-sleep.
It's very well-written, interesting and developed. I had a lot of fun reading it.
Also, if you're into more theme-driven fan-fics, I suggest this guy's stories. They're largely horror/exploration based, and don't really have any relation to the games themselves, but are rather a more fanciful tale of what is happening to other humans.