The Nine Realms

In the vastness beyond time and stars lies a cosmos of pocket realities, known as the Nine Realms. Each is a world unto itself—complete, distinct, and unaware of the others—suspended in the folds of a greater, unseen existence.
  They are not aligned by order or hierarchy. Some are ruled by gods, others by mortals. Some bathe in the light of creation, others roil and fester in the dark depths of ruin. Yet each is bound to a hidden nexus called Primordia, a realm-between-realms where each of the lands converge. They are bound to Primordia by gargantuan chains- some as tall as a building, others no smaller than a man. They connect to ancient sites scattered across the Nine Realms—each one an Anchorgate, silent and slumbering, awaiting a time foretold in myth and feared in prophecy.
  That time is the Convergence.
  When the chains snap taut, and are drawn back to Primordia, the veils between realms will thin, and the Anchorgates will awaken; the boundaries that once kept the Realms apart will dissolve. Gods, monsters, and mortals alike will be swept into a conflict that spans realities, reshaping the fate of the universe.
  Until then, the Nine Realms turn in solitude. But the chains are stirring.