The Elder Scrolls

A world wildly different from our own in many ways, but achingly familiar in a few, Mundus(the mortal plane) and the surrounding planes of existence could provide unique challenges to a newcomer. What happens when someone from another universe entirely suddenly appears? How similar is being in the universe as an outsider to puppeting your avatar from the outside? Are you a total stranger to the world upon entering, or do you have friends already?