Start to see me about revolutionary action plan (6)
I believe the answer is:
scheme
'action plan' is the definition.
(a scheme is a plan of action)
'start to see me about revolutionary' is the wordplay.
'start to' says to take the initial letters.
'about' is a charade indicator (letters next to each other).
'revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary).
The first letter of 'see' is 's'.
'me' put after 'che' is 'cheme'.
's'+'cheme'='SCHEME'
(Other definitions for scheme that I've seen before include "Hatch - plot" , "Machination" , "Elaborate and systematic plan of action" , "Conive, intrigue" , "Cunning plan" .)