the return of the two spheres
zhukolu wants the archipelago of torrent to form a unified nation of yuan-ti before the celestial eclipse but is having difficulties obtaining it using various yuan-ti clans because the merchant princes of port kitawaki have an exceptionally strong navy and military.
theme: ambition leads to power and is what ends in destruction. but with the choices between right and wrong unfolding the fate of the world and its future.
zhukolu wants to take over the archipelago of torrent because the various houses of yuan-ti need to be unified and if they are unified under zhukolu he can find and get the spheres of light and darkness which is within Torrent
zhukolu is greedy for the spheres so he can become a living god.