I don’t even know… this universe hasn’t been updated in seven and a half years plus a fandom ago. But I wanted to fix a few things in the main story and that involved writing out the retcon first. Here you go:
Qui Habitat (the Shambolic Zombie Remix), aka Chapter One, But Now 15K Words.
(Go ahead, laugh.)
The universe summary, for those who weren’t with me in 2011:
An SGA/SG-1 AU that spins off from the Ori arc that runs through Seasons Nine and Ten of SG-1 by changing one simple thing: the Ori don’t lose. Earth is the last significant planet to fall in the Milky Way, but fall it does. Hard.
After Earth’s fall, a large resistance movement was active, utilizing the Daedalus, the only surviving SGC carrier, as it’s main instrument. Running raids in the Milky Way and bringing refugees and supplies to Atlantis, the Daedalus was the only lifeline between the two galaxies. Eventually her luck ran out and she was nearly destroyed by an Ori armada; after limping back to Atlantis, she is no longer flight-worthy and Atlantis is finally truly alone.
Over in Pegasus, Atlantis was first a long-distance witness and then a rear echelon for the escalating fight with the Ori over the Milky Way galaxy before becoming the final retreat for those who survived. Cut off from Earth and forced to revert to its (Season One) status as isolated outpost responsible for its own needs, Atlantis still has the responsibilities it has assumed in Pegasus - defeating the Wraith and protecting those who can’t help themselves - while also awaiting the inevitable arrival of the Ori.
Also posted at DW.