I'm writing a story where this guy, Simon, is the Grim Reaper. He's not an evil villain or anything, he's just basically the CEO of the underworld. Near the beginning of the story, he gets kicked out and sent to Earth. He then was to find his way back, because the guy who replaced him is an evil villain. He's releasing the dead back onto Earth and all kinds of crazy stupid stuff like that. My problem is, I have no idea how to get him kicked out. He's the leader down there, so I don't know who would kick him out or why. I can't find other things that are similar to go off of, either. In all the stories of gods becoming mortals, they aren't the king god. The king god usually kicks them out (Marvel's Thor movies, Rick Riordan's Trials of Apollo). Any ideas?