Failed to get the logic: the story goes on, but nobody's home?

[NewHopeR]

Yes, "the story goes on," it is understandable; "but nobody's home"? Does it mean the story has no closing?

Context:

A ghost is a role without an actor. Ghosts are like movies—the story goes on, but nobody's home. Like dead skin, under normal circumstances, a ghost lingers

[SoothingDave]

It's not clear from this excerpt what the point it.

[NewHopeR]

It's not clear from this excerpt what the point it.

More context:
A ghost is a role without an actor. Ghosts are like movies—the story goes on, but nobody's home. Like dead skin, under normal circumstances, a ghost lingers just long enough to prevent the vulnerable flesh of the living.
Not all that rarely, people are born with nothing inside, or lose what little they have -living ghosts

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It seems that the author says some evil people are born without brains, that they are living ghosts. The story of life goes on, but nobody's home - because they have no brains - their minds are not at home.