For months, people have been being randomly plucked from their lives and thrown into other realities and worlds, creating chaos and mayhem throughout the multiverse. People thought to be characters from movies or books in one reality pop up as real people in another. Nobody in any of the realities had been able to figure out WHY or HOW this was happening, only that it was.
However, in one reality.... the CAUSE at least has been found.
In the world known to us as Marvel-616, scientist/superheroes Reed Richards and Hank McCoy, along with Latverian dictator Victor Von Doom, brought together by a common fear that these events were tearing the threads of reality to pieces, combined their efforts and realized that this was being brought about by the combining of the infamous Reality Gem in two separate realities.
With no current theories on how to stop this from happening, the most the three could think of was to leave the gem in possession of someone who could keep it moving constantly, to help keep it out of the hands of The Mad Titan Thanos, who could use the now-unstable gem to finally end everything.
With the blessing of SHIELD and The Avengers, the gem was given to sometimes-teammate Peter "Star-Lord" Quill and his Guardians of the Galaxy, who now keep it onboard their travelling space station called Knowhere, which Tony Stark has now helped build on and make more inhabitable to accommodate all the people being transported to and from this reality via the Reality Gem.
So now, in a space station that is essentially the severed head of a giant Celestial, which has been modified to allow for a more homelike environment, the Guardians travel through the cosmos with a constantly-changing cast of passengers, trying to keep the gem from falling into the wrong hands while Richards, McCoy, and Doom attempt to figure out how to separate the gems and get reality back to 'normal'.
"Knowhere" is a panfandom RPG taking place in the Marvel 616 universe. All characters NOT from the present-day 616 universe will arrive onboard the space station after being engulfed by a flash of light and then appearing on the floor in the room in which the Reality Gem is being held. Characters will be travelling the galaxy, and are welcome to either stay onboard Knowhere, which has been modified to hold essentially a small-earth like city inside of it, or explore whatever world Knowhere is currently near. The mods will decide which world is currently being visited. There will also be various small plots, which you may take part in only if you wish.