Having vanquished the slaadi and the aboleth, the party get to give Roker up on the docks his grim prognosis for chaos phage. In roughly 4 days, the cursed disease will knock his max ho to 0, from there he will transform into a mindless monster, a slaadi and try to kill them all.
The plan, get him to someone who can perform the magic to rid him of the magical disease.
His best friend, Moonglow, (after their level up) knows the spell, but lacks the expensive powdered diamond components.
Dhoz says they need the components or Roker's toast, he even offers to KILL him to try and halt the clock as 'death is curable' in the wise words of Dhoz.
Roker has to think on it, its a grim prognosis and he's not as flippant about snuffing out his life on the promise that they could bring him back. Stressed and in pain, he tries to rest while they wait for their wizard friend to regain the spells to bamf them to the Avium for the spell components they need to save his life.