I will give a rundown with less flavor text, because I think Doom wants an idea of what was going on and not Reynard's opium spell.
After the worm-tentacle-thing popped out of the girl's head, we followed the other zombie-people to an elevator that would go to the next tier of Amaranth (2 of 7). Too many people got in the elevator, or the elevator was made unstable by certain individuals causing problems inside it, and it went shooting downward, into another, under-level of the city. Nikto observed that there was not supposed to be an underground level.
The possessed people ran off into the dark and we followed them until we hit a dragon-statue and were stopped by what appeared to be a line of Drow. They vanished and Nikto and Kara fell into a pit-trap, upon which another Drow appeared, as did a half-dozen elves with their eyes bandaged and bloody, who began to shriek in Abyssal.
The rest of the session was primarily combat. Simkin slid the Drow into the pit, crushing Nikto but mostly eliminating the Drow as a threat (Nikto and Kara kicked the shit out of him). The rest of us were left to handle the dragon statue that came to life and seemed impervious to damage. Only the Simkin really picked up right away to knock out the elves who were chanting Abyssal. When that didn't stop the dragon, we resorted to killing the elves, at which point the dragon exploded. We hauled the Drow (and our buddies) out of the pit. The Drow made some "you have no idea what you've done!" threats, and a big booming Drow voice down the hall somehow killed him (perhaps with bad breath). We ended the session running after the voice, leaving the unconscious possessed guy behind.
I feel bad that Shawn spent the whole combat in a hole in the ground. It was a pretty interesting combat. I wish I had picked up that we could not hurt the dragon earlier, as it could have been finished more quickly that way, but also I guess more story would've happened that Doom would have missed.