Scene five is at back (5)
I believe the answer is:
vista
'scene' is the definition.
('vista' can be a synonym of 'scene')
'five is at back' is the wordplay.
'five' becomes 'v' (roman numeral).
'back' is a reversal indicator.
'at' in reverse letter order is 'ta'.
'v'+'is'+'ta'='VISTA'
(Other definitions for vista that I've seen before include "Perspective" , "Panoramic view" , "View (with avenue)" , "Outlook" , "Distant view" .)