Royal artist involved in domestic plot (9)
I believe the answer is:
narrative
'plot' is the definition.
'royal artist involved in domestic' is the wordplay.
'royal' becomes 'r' (abbreviation).
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'involved in' is an insertion indicator.
'domestic' becomes 'native' ('native' can be similar in meaning to 'domestic'**).
'r'+'ra'='rra'
'rra' inserted inside 'native' is 'NARRATIVE'.
(Other definitions for narrative that I've seen before include "Telling a story" , "Account of connected events, a story" , "Popeye's vegetable" , "Tale" , "Verbal account" .)