After Nimari gave them a tip of where to find some potentially un-looted ruins, the PCs went off into the swamps along with a few NPC companions where they proceeded to go to war against an army of trolls led by a spiked troll king, save a town from assured destruction, and free a silver dragon from a magical prison.
After this was accomplished, the PCs sent Nimari a sending to ask for a teleport back to the big city, only her response was a bunch of insane gibberish. Uh Oh.
After returning on their own to the big city, the PCs discovered the Moldy tome was ransacked, and after a breif discussion with Nimari's familiar and some scrying, they learned that the staff made Nimari go nuts, and she took the staff and book and plane shifted to the Astral Plane.
They also found some clues mentioning a place called Aramesh on the Astral plane...
Zadok, the heroic cleric who recently hit 9th level and could cast plane shift, said "lets go get her!" and they made thier way to the temple of luck so he could cast his spell (after much shopping and arguing, of course)
But on the way...