The missing

We hear that some of our archers have not been checking in. They've been at home because of the quarantine but still normally check in.
We decide we're gonna go check it out but get stopped at the wench and flail, where there had been disappearance and murder. A githyanki had it's brain and spinal cord extracted and several humans were missing. We hear that a local fortune teller was also missing, and go to investigate. Hearing there was a trap, azurite triggers it several times until it has shot several javelins into the porch.
Inside we find a similar grisly sight. The fortune teller was also sans brain and spine, and several members looted her house before we left. Continued toward the constable, we talk to him about the missing members and get the address. We find one of the members girlfriend there and Norman uses detect thoughts and delves into her memories, uncovering a memory in a drunken stupor of seeing an imposing figure controlling the others and leaving her as insufficient.
After each of these we attempted to trace and track back to the source and while unsuccessful, we triangulated their entry point from the old city.
Norman alarms the bridge they're using and we position across it to catch the predators. It turns out they were invisible and Doug manages to catch sight of them, strange jellyfish creatures being led around by blank eyed humans.
We follow them and Wynn communicates with them, finding out they are searching for sources of psionic energy.
They finally lead us to a location and say they're feeding, and we find below the streets a sleeping kuo-toa.
We head back up and are waiting for the"extraction team" and eventually a cart pulled by a mass of brains formed into a large humanoid shape pulls up and there are 2 lizard men with tentacles instead of jaws in the cart. A fight breaks out and there are issues damaging the creature, gronk is stunned by psychic power and Wynn's shadow blade is absorbed by the brain creature. Eventually the enemies fall and we hear from the jellyfish creatures that their food is gone. Wynn realizes what's going on and runs down into the sewer, azurite runs too and gets there first, to find a huge illithid taunting us with the dead kuo-toa.
After mind blasting us all and killing Doug's dog he teleports away.
 
We lick our wounds and attempt to prepare better for the next time. A shopping trip and a talk with Murak give us lots of new information, exaggerated by Dazy blurting out everything she's been holding back regarding Zellix, Roofus and Dazys dealings with him and their other misadventures. Doug has a meltdown and says he's done with the guild.
As this comes to a head, we spot some smoke creatures and follow them. They lead us across into the old city and to a pair of Nothics feeding on an unfortunate man. Investigations come to the conclusion that he was one of the missing, and he was leading a jellyfish around before his death.
The smoke monsters also lead us past a random polar bear, and the city seems significantly more chaotic than normal. It seems it's almost changing the moment you turn your back instead of days apart.
 
Eventually the smoke creatures lead us to a tower in a clearing. The tower has strange lines across it's surface, pulsing with power and dozens of presumably kidnapped people around it. At the top we spot the illithid, who laughs at us and taunts before going into the tower.
 
The tower seems to tear at reality with pulses. It shifts the terrain around us, and seems to summon strange creatures made of chaos. Norman summons a tidal wave and creates an opening to the tower, and gronk rushes in to climb to the top and stop whatever is happening. The tower pulses with the eyes of the humans around and creates beasts that tear into the party. Suddenly our weapons switch among the party, gronk glaive in the hands of Doug, azurites dagger in Norman's hand, chaos ensues as we scramble for alternate weapons.
 
Doug targets the tower and that seems to weaken it, but more and more chaos creatures are formed and the party goes down one by one. Gronk and Dazy begin to target the tower itself, weakening the chaotic power and returning weapons to proper hands.
 
Insane creatures with the torso of an Archer for a head appear and snipe down azurite who has tried to escape to the tower for safety, and she bleeds out as gronk battles beside her. Norman is taken down, his now motionless body still hovering on the flying carpet.
 
Doug is sniped off the wall of the tower and falls, healed briefly by a potion from Dazy, but the insane geometry pulls him partially into the ground and he escapes only by Dazy pulling him out.
 
Gronk grabs azurites body and jumps from the tower, and begins to tear the archers apart while Dazy and Doug finish off the last bits of power of the tower.
 
Beaten and broken, the party retreats to tell of the fate of the missing, some struck down by the party but many sucked dry by the power of the tower. We vow to return and find that illithid and stop him.