Land is what the story is all about (4)
I believe the answer is:
plot
'land' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for plot that I've seen before include "... of story, family ..." , "Machination" , "Piece of ground - conspiracy" , "garden area" , "Chart - area" .)