This actually depends on you. My group is sort of split up but interacting parallel to each other. I basically have plots running in the background that organizations and factions are creating. Some are trying to combat Ruin, while Ruin has their own plans, which are part of more major plans, which also connect with those another group are dealing with, etc, and all are connected with the starfalls.
So depending on the type of character you have and where their strengths lie, I could fit you in almost anywhere. Since the majority of plots connect at some level, anything can eventually lead me to bringing you all together if that is wished, or if circumstances happen to do so.
I could even, possibly, put you on the 'bad side' if it appeals.
One of my best players won't ally with any of the groups, playing a very self-centered and paranoid minded individual. He keeps flitting here and there, being tossed about in the storm of play and trying to survive. He's sort of like the unstoppable force ricocheting off of the immovable object.
Basically, how you got here is more important than where you are. Once I read your story and know what manner of individual you are I'll best know how to suggest you start.