Factions

Tempest is happy, he is a warrior in the New World Order Faction, NWO faction for short.
He has a family and his good friend Ember, who works in the local library.
Until The leader of the NWO faction, the OverLord decides to go after a power source only rumoured to exist...
Tempest has the option to betray his faction and stop the Overlord from taking the ultimate power source... or watch his whole world burn around him.
Will he make allies in opposing Factions or will he be taken prisoner?

[Set around 50 years after book 15 of Wings of Fire]