Not the whole of the story (7)

I believe the answer is:

episode

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'story' is the definition.
(thesaurus)

I don't understand how the rest of the clue works.

(Other definitions for episode that I've seen before include "Incident or one part of a story" , "One instalment of a series" , "Story instalment" , "Bout" , "Part of a broadcast serial, say" .)

I've seen this clue in The Globe and Mail.

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