Strange story that article covers (5)
I believe the answer is:
alien
'strange' is the definition.
(synonyms)
'story that article covers' is the wordplay.
'story' becomes 'lie' (story can mean a fabrication).
'that article' becomes 'an' (indefinite article).
'covers' is an insertion indicator.
'lie' going inside 'an' is 'ALIEN'.
(Other definitions for alien that I've seen before include "Outlandish" , "Belonging to a foreign country" , "movie!" , "Martian, say" , "Foreign - film directed by Ridley Scott" .)