Storybook ending? (5)
I believe the answer is:
moral
'storybook ending?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for moral that I've seen before include "Honourable" , "Practical lesson to be drawn from an experience" , "Pertaining to right and wrong conduct" , "Upright; message of fable" , "Lesson of a fable" .)