Protagonist hides somewhere in New Zealand (5)
I believe the answer is:
otago
'somewhere in new zealand' is the definition.
(I know that Otago is in New Zealand)
'protagonist hides' is the wordplay.
'hides' says the answer is hidden in the clue.
'OTAGO' is hidden in the letters of 'protagonist'.
(Other definitions for otago that I've seen before include "Region of New Zealand around Dunedin" , "Antipodean region" , "Part of South Island" , "part of New Zealand" , "Council region of New Zealand" .)