Gary and Cindy Hakkapeliitta met up at Aethelbald's ranch outside the city, to get their next mission from the Unicorn the Orc brought out of the underworld. The beast knew a lot about what was going on in the undercity, and explained the situation to the Guild: The destruction of the telepathic statue sabotaged the Squids' alliance with the Giants, who realized they'd been duped when the fog of mental interference suddenly lifted. But any attack on the squids themselves would require psychic defenses, and that's what the Guild was going to get. The Demon Ruins were full of evil spirits that would trade for what they needed. The Unicorn couldn't go with them because he hated Demons. They killed his rider and he would savagely attack them on sight with no thought to the mission. He didn't feel good about sending adventurers down to do the job, but he offered to pay them real nice if they brought back enough psychic defense for everybody.
There were two ways into the Demon Ruins: a long drop down the waterfall in the Stone Garden, and the frozen doorway in the Giant Conclave. The waterfall was dangerous to traverse but not actively monitored by the monsters. The Conclave door led into the hanging palace of a particularly nasty Demon who wouldn't sell the players what they wanted. The siblings chose the Conclave entrance. Climbing down a giant rope under a waterfall was one thing, climbing up while being pursued by monsters was another entirely. Better to have a secure line of retreat than an easy way in. The Unicorn thanked them for their service, he wished he could pay them better for giving up a piece of their souls but the City would be better for it.