First time DM here, looking for some plot help for a 3.5 campaign. My campaign world is somewhat grimdark with a distant, unreachable God. The religion is monotheistic with a powerful, Catholic-esque church. The devils are fallen angels and have conquered the demons and use them as minions/lieutenants. There are no hard alignment rules ('detect alignment' only works on outsiders, clerics/paladins, 'smite evil' is 'smite heretic,' etc.). Arcane Magic is rare and strictly controlled, Divine Magic is rare but more trusted. Humans are the strongest power but are divided into feudal monarchies. There are barbarians to the north, cults in the cities & towns, and Orcs in the wilds. Elves & Dwarves maintain enclaves separate from humanity.
While I have lots of ideas for individual encounters and the world, I have no good ideas for an overarching conflict. I want it to be suitably epic and world-changing. My players are a smart, mature bunch who would appreciate a labyrinthine plot they have to figure out. The world's Satan merely trying to conquer the Material Plane seems too simple on its own.
This is where I was hoping I could get some help. Any ideas would be appreciated.
While I have lots of ideas for individual encounters and the world, I have no good ideas for an overarching conflict. I want it to be suitably epic and world-changing. My players are a smart, mature bunch who would appreciate a labyrinthine plot they have to figure out. The world's Satan merely trying to conquer the Material Plane seems too simple on its own.
This is where I was hoping I could get some help. Any ideas would be appreciated.