Story: epilogue on stage (6)
I believe the answer is:
legend
'story' is the definition.
(legend is a kind of story)
'epilogue on stage' is the wordplay.
'epilogue' becomes 'end'.
'on' says to put letters next to each other.
'stage' becomes 'leg' ('leg' can be a synonym of 'stage').
'end' after 'leg' is 'LEGEND'.
(Other definitions for legend that I've seen before include "Footnote" , "Roger Federer, for example" , "Motto" , "Key" , "Fabulous tale" .)