If you can possibly avoid it, don't reveal all of the plot information for your adventure to all of the heroes at once. Give the vital information to one of them, and let that lucky character inform the others about what's happened and what needs to be done. The results can be very entertaining, and make for a fun thyme for everyone.
Obi-Wan: Palpatine's message said you would brief us on our mission.
Padmé: Right. He wants us to find the stolen plans of the Peace Moon.
Obi-Wan: Surely he has backups?
Padmé: That Basil Oregano guy probably hacked into the system and deleted the copies.
Padmé: Didn't you see his goatee?
Obi-Wan: Didn't you ask Palpatine?
Obi-Wan: You're supposed to have a reasonable Intelligence score in this campaign.
Padmé: We'll trawl for rumours at the tavern.
Jar Jar: Are there fishermen on this planet?
Obi-Wan: This is a Jedi matter. Anakin and I will decide where to start. Your role should no doubt be to protect Naboo's interests in the Senate.
Padmé: Why? Didn't I save everyone in the last game?
Padmé: Why else do you think we were assigned to find these plans, if not to kick some butt?
Padmé: Protection is a job for NPCs... not a badass Senator. It's overkill. Investigation is implied in our mandate.
Obi-Wan: Our mandate?
Anakin: Now you're starting to sound like a Senator.