The setting is a very basic sci-fi concept: a post-scarcity intergalactic society that spans something like 15 galaxies, including the Milky Way. Body modification and brain uploading is common, and while there's no magic per se, a few species do have powers like telekinesis. Travel is faster than light, but it still takes several weeks to go from one end of the territories to the other. Due to this, all ships that cross the void between star systems are built to be mostly self-sustaining in case of emergency.
All trade involves either rare goods that are difficult to duplicate (such as traditional works of art) or supplying new colonies (be they ~*~in spaaaaaaaaace~*~ or on a planet) that do not yet have materials for duplicators. Interstellar traders are thus fairly rare, since it's mostly ferrying goods in exchange for other goods rather than for money (which does exist, but most species don't use it outside of a few planets because... post-scarcity).
It's an open setting; if your character isn't explicitly magic, they're allowed in (feel free to reskin your wizards as psionics, though).