Chapter 4 - Zenith Trajectory

Vhalanthru wants to test the characters, and the Lord Mayor has had difficulty lately collecting taxes from a merchant named Maavu. When and errand takes the PCs to northwest Magma Avenue, Vhalanthru's agents release a fiendish umber hulk to rampage through the city - conveniently near many of Maavu's shops, offices, and warehouses. When the character vanquish the marauding umber hulk, they get an invitation to Cusp of Sunrise, an invitation)only club for nobles.

After dinner at the Cusp, an alluring noblewoman named Celeste leads them into a private meeting room where they meet a dwarf so decrepit that he looks dead. The dwarf, Ironlord Davdek Splintershield, explains that he has been cursed by a terrible wasting disease because he disowned his three sons. The only way for the curse to be lifted, Davdek relates, is to make peace with each of his three sons. He's done so with two sons, but he can't find the third son, Zenith Splintershield.

Celeste offers the PCs 5,000 gp each if they can find Zenith and return him to Cauldron. The characters head north from Cauldron into the mountains, eventually reaching an entrance to the Underdark near the hut of an old hermit named Crazy Jared. They climb down into the Underdark and reach the kuo-toan temple of Bhal-Hamatugn. The the PCs learn that Zenith is the leader of the kuo)toad, not a prisoner. They must contend with Zenith and the kuo-toas before returning to Cauldron to claim their reward.