“Mr. S, an ordinary American, is minding his own business outside his East Coast home when he is suddenly abducted by short, large-headed creatures from another world. They bring him to their ship and voyage across unimaginable distances to an alien empire both grander and more horrible than he could imagine. The aliens have godlike technologies, but their society is dystopian and hivelike…”
The Story Of Thanksgiving Is A Science-Fiction Story by Scott Alexander, 2013.
(hat tip to Jeremy McNaughton on Mastodon)