The Wizard, Cleric, Paladin, and Rogue went into the Underdark with three of the Paladin’s warriors and one of the Halfling’s guys.
The Wizard and Rogue climbed a cliff in the Underdark (why the Wizard you ask? no Friggen clue). And they were ambushed by Darkmantles up top. Defeated them quick enough and then everyone climbed up using the Wizard’s slippers of spider climb (they would climb up and toss them down to the next guy). Then for some inexplicable reason the Cleric was last and decided he would just climb because he couldn’t fall and take damage because he had the ring of feather fall. So he tried and tried and tried and tried and tried and kept getting halfway up and falling back down. Eventually a monster appeared and attacked the Cleric at the bottom when they were separated.
It was a Destrachan, a sonic attacking lobster with a whole whack of HP. The monster used its non lethal attack as it dealt 6D6 non lethal damage to practically everyone since it’s an area of effect. Knocked out all the minor character easily and was whittling down the main guys when the Paladin decided “enough is enough” and jumped down the 30 foot cliff and charged at the monster. Took a round or two but after that the outcome was never in doubt.
Then shit got real. They explored around the cave system a bit and got ambushed again by Darkmantles, this time a dozen of them. Almost wiped them out. Killed the halfling’s follower and all but one of the Paladin’s warriors he brought along. After that they decided to return home.
During the last fight the Drow who was leading them through the Underdark used his faerie fire abilities to help them spot the Darkmantles in the darkness spells they kept using, so the Paladin for some reason decided they should arm the Drow so he could help in the future. The Wizard of course flipped out and kept taking the sword away from the Drow, and the situation turned into the Paladin giving the Drow a sword then the Dwarf taking it back and then the Paladin demanding his sword back and then giving it back to the Drow again once the Dwarf handed it back.
The Underdark echoed with their mumpsimus argument.