you are a post man that can travel through dimensions, you have gotten lost so now you are do a business in the wormhole of dimensions, you deliver random letters to lots and lots of dimensions and it can literally be any dimension, and you are immortal so if you're delivering and the man you are delivering to tries to kill you, you cannot die so don't worry

You have a very busy day today with a lot of letters (don't ask who they are from) so be quick and have a good one