Hey! Thanks to Unable2Connect for replying to my forum post! Here's two websites where you can find the plot summaries of both Divital Devil Saga 1 & 2! Yay! Maybe this will help my confused brain!

DDS 1:http://en.wikipedia.org/wiki/Digital_Devil_Saga

And this site covers a lot of the plot points brought up in DDS2:

http://www.yosuga.net/dds/