OS2 is set in 1242, which during that time according to the timeline, Lucian should be locked away, Damian biding his time and building up his army, and The Slayers having been founded to combat the Dragon Knights. Braccus Rex is back because he was resurrected by Tarquin as he knows where to find the Aeteran (Forgive me, I may have misspelled the name of the weapon) which can kill anything. The Void is or was, the Race that The God King, the Eternals, and the Seven Gods belonged to, but the Seven were not Gods under the God King, when they rebelled and sealed him away, they used Source to power themselves, and then they created the Races to feed on to make themselves stronger. So, say a human dies, when they go to the Hall of Echoes, Rhalic will feed on their source, making himself stronger and completely erasing that person from existence all together. So, in essence the Gods are parasites. The Divine is used by them to stop the void so they can continue feeding on everyone. The God King just wants to be the ruler of everything again. This the basic gist of the entire story. Some parts may be slightly wrong, and if so, feel free to correct me.