Umbara has been a member of the Galactic Republic for thousands of years. Its close proximity with the Hutt Empire has endangered the planet and its inhabitants to the whims of the Hutts and their allies. However, they, being a secretive and proud people, are unwilling to accept the Republic's aid against the Hutts. Several Jedi have been requested to venture to the world, meet with its royalty, and convince them to house a Republic garrison on the planet.
The description for a Jedi mission that BringmetheHorizon and I are currently signed up for.
At this point, we're looking for some opposition. It can be either NPC'd or player characters - Hutt allied characters would be ideal, but really this is open to interpretation; any character with motive to disrupt the negotiations will work.
Also, the mission still has an opening for a Jedi of any rank, in case someone is interested.