This is not yet a plot, just a concept for a game. A fairly common device in RPGs is for each character to have a plot relevant unique item. Maybe it's an extension of their soul, or maybe each is a part of a set of ancient and mythical items. More often than not, players make up their own. For my proposed game, players will each make up an artifact, and they will be assigned at random to the characters. You'll have o deal with whatever your fellow players have written up, in whatever plot comes forth.

This will either be in a typical(though strictly defined) medieval fantasy world, or a made up modern day city. Whichever people are most interested in. As soon as that is decided, we'll start work on plot.

This may not be much to go on as of yet, but if you've seen me around you should have an idea what to expect.