Blood of Io
A war is brewing. The battles between children of Io are escalating driving their faithful to ever greater heights of bloodshed, soon the entire world and beyond will be swept up in the conflict between Tiamat and her twin Bahamut. One seeks to see the planes reduced to ash while the other seeks to save them once and for all.
This shall be a roaming campaign, some quests will be required for the progression of the overall campaign arc, otherwise (Taking a card from Gabe’s (of Penny Arcade) DnD ideas) the PCs will be able to explore areas in any direction with areas created in zones like in WoW with each zone having points of interest to be explored.