The Greek gods have always ruled together, not necessarily in peace, and the world has kept moving forward. When personal relationships start to take a toll on the small ounce of peace left between them the war begins.
Hades and Persephone have the Underworld running smoothly no matter what issues persist between them. They make sure their rule is never questioned. When Zeus decides to take control of it all, because Olympus is not enough anymore, Poseidon and Hades prepare their realms for war.
Will the world survive the War of The Gods?