A Ritual Component
Harshnag has a lead on the cloud giant castle that took the Nightstone: he believes it will be taking the Nightstone to Westbridge in order to perform a ritual spell that would be "apocalyptic" for the small folk.
The party heads to Fireshear intending to hire a ship to take them south to Neverwitner, from where they could set out to Westbridge on foot. While in Fireshear, they debate hiring griffon mounts but decide that it would be too expensive, plus Harshnag couldn't ride one.
Alun earns the party room and board at an inn by agreeing to play there that night and earns some renown for The Story of Us, his magnum opus about the party's adventures.