Hi Jeff, thanks for asking.
It's Sunday morning, which is my me-time, so lemme tell you more.
You’re the last of the human race. Long ago, the terrible Scourge laid waste to thousands of worlds, leaving only rubble and ruin in its wake. Your world was spared.
Your only explanation — for all records of that time have been lost — is that the Prophet Isabel led your ancestors to safety, far from the reach of the Scourge. But they repaid her kindness by fighting among themselves, and they fell into a terrible dark age, fighting for centuries.
Out in the galaxy you have found no trace of other humans. Only tribes of aliens, many of them hostile to humankind, many who look upon your world as a prize to be taken.
You and your shipmates are part of a special agency code named Vanguard. Tasked with strengthening the Planetary Commonwealth, you must find allies among the alien tribes, weaken those who would be our enemies, and uncover any evidence that the legendary Scourge is still a threat to the human race.
So the short answer is that your world is the community. Part of the game will require some meaningful "down time" back home so you can establish some connection with the stuff you're fighting for.