Talk to King Narnode at the Gnome Stronghold. It appears that Brimstail was able to enter Arposandra and saw an entity of extraordinary power. King Narnode is asking you to lead a small amount of soldiers to Arposandra to find out the truth and protect the gnomes from Glouphrie. Aside from that the king is also interested in finding out why Glouphrie had killed Argento The Silver Spirit Tree, before having been exposed by Oaknock.
This part is the most exciting part. Make sure you have a good melee weapon, as you will fight Wyvoch repeatedly, and prayer only being partially effective. Talk to the gnome soldiers, who await your arrival in the sewer dungeon. They will knock on the door.
Go into Arposandra and run by the Glouphrie wizards, and then go to the Temple at the center of Arposandra. The Temple will be viewed through a window, and see a frightening cutscene involving Glouphrie, the Red Axe Co., and Lucien.
Glouphrie, are you certain that, when you reach the height of the peak, if your channel is right, I will be capable to take on Seren's power? Yes. Your destiny will soon be fulfilled, Lucien. Be certain that you aim the spell correctly towards Priffdinas. Don't hurry because intruders might be spotted and I'd like to give our troops the chance to kill them. (Lucien quits the room; the vase beside Glouphrie disappears, being an illusion, and someone comes out)
You took long enough. He wouldn't leave, I thought. It is important to have a good manners in such transactions, but. We definitely learned this from these records. Yes. You witnessed the amazingness of dragonkin through the old diary.