The Shattered Isles were once a continent of there own, but the name has been long forgotten. The continent was destroyed during the war of the gods, and now much of the history of those lands are lost.
The Shattered Isles are where many of the stranger races of the material plane call home, it is believed that the continent that once was there was a utopia for all the refugees of the interplanar wars. The survivors of the Shattering now live on the islands, having to restart to get back to a place they used to have.