From the PDF (edited):
The assembled alien races of the Galactic Union have reached a political crisis moment. If no agreement can be reached in the next Earth hour, an intergalactic war appears inevitable...
As a matter of tradition, you, diplomats of the Interstellar Union, will meet on one of the planets that will be annihilated in the path of devastation. This ensures that you will see the life that will die if you fail to negotiate a peaceful accord. For this meeting, you have come to a planet called Earth and you have taken on the guise of the native semisentients. You each appear as human to the local lifeforms and to each other, to avoid panicking the natives.
As is traditional, if they fail to broker a peace, then you will be left on Earth when it is destroyed...Can you use that authority to prevent a galaxy wide war?
This is a game about negotiation between alien races. It can be played as a tabletop game, but you might get more fun out of making it into a larp or semilarp. You can get up and act out your diplomat’s actions, but you can also narrate behavior that is difficult to larp.