Splendour of chapter in uplifting story (5)
I believe the answer is:
eclat
'splendour' is the definition.
(eclat is a kind of splendour)
'chapter in uplifting story' is the wordplay.
'chapter' becomes 'c' (abbreviation).
'in' means one lot of letters goes inside another.
'uplifting' says the letters should be written backwards.
'story' becomes 'tale' (synonyms).
'tale' written backwards gives 'elat'.
'c' inserted into 'elat' is 'ECLAT'.
'of' is the link.
(Other definitions for eclat that I've seen before include "Brilliant success - striking effect" , "Enthusiastic approval" , "Splash" , "Splendour; renown" , "Conspicuous success or distinction - in France" .)