Mortality rests at the nexus of several other planes, created by the overlapping, competing, and commingling of those forces that the planes represent. All the Planes occupy the same space, the same moment, the same whole, and the same world, but are different realities.
Wyrlde is in a space called the Material Plane by some, but normally referred to as the Plane of Mortality.
Each plane is a stack of four distinct Dimensions, or realities, each coexisting with other Dimensions, and the whole creates a complete multiverse – and within the greater Cosmology they are merely a part of a larger one. Should you pass into to one of the Dimensions of the Mortal Plane, or cross the Veil and go beyond the Pale, you will still be on Wyrlde, in the same place, but the place will be different. There will be other people – possibly even another you, in every Dimension in every Plane and that’s 28 Dimensions that exist in total. In some Dimensions, there is no magic at all.
I have watched a person die and seen a Power snatch that same person from a different Dimension and put them back exactly where the previous them was. This is because all the Dimensions are reflections, echoes, shadows of our own; sometimes off a little, sometimes off a lot.
Throughout all these many realities is The Pale, acting as a kind of permeable borderland in which dwell the Elementals and the Veil Gates that both brings them together and keeps them separate. Crossing this is going Beyond the Pale.
To move among the Planes requires one to deeply understand The Veil and The Pale.