Close to the center of the multiversal spiral is a universe. It is a universe like all the others. It has stars and planets and galaxies. But the galaxies in this universe are alive, the stars are sentient and the planets are host to deities.
One such planet, called Earth, is full of cities. The city of New York is built entirely of gold and light, and the sky above it sings each morning. Los Angeles is built primarily of fire and human flesh, while London gleams in silver and water. There are cities grown from trees, and towns that aren't there. Astral projectionists from the outer universes tour a crystal metropolis, while the souls of dead mortals are taken to their destination cities in carriages of mist, drawn by horse-shaped clouds.
Many of the deities who live here have created universes of their own, and peopled them according to their whim, casting them far out into the uncharted fringes of the myriad spiral arms, in the quantum nursery that holds the mundane realities. Some deities collaborate on a universe, each crafting a certain aspect of its nature.
One group of collaborators is having a falling out. The Goddess wants a raise, the pantheons are seeking more creative control, and the trickster gods keep trying to buy everyone out. The nature spirits have all but backed out of the project entirely, and everyone is pissed that God keeps trying to run the show.
Can this handful of deities share a universe, without driving each other crazy?