This is a weird (in a good way) novella about a world in which aliens kinda sorta come and take over but all they mainly do is help people understand that we’re all in it together. The book mainly covers the time after they’ve shown up, so there’s not a lot of “first contact” sort of exploration. We watch society transform as people make “better choices” en masse. But sometimes people miss the options to make bad choices. There is a small rebel faction. The aliens also enable some magic so that you can grow horns or have hooves or become a baby again. One woman’s wife decides to become a baby and we’re watching her manage that grief (and her right to be sad) in a post-scarcity world. There’s a lot of general metaphor about what does it mean to be truly yourself.