Scheme of random selection to succeed Papa (4)

I believe the answer is:
plot
'scheme' is the definition.
(plot is a kind of scheme)
'random selection to succeed papa' is the wordplay.
'random selection' becomes 'lot' (I am not sure about this - if you are sure you should believe this answer much more).
'to succeed' means one lot of letters go next to another.
'papa' becomes 'P' (NATO phonetic alphabet).
'lot' put after 'p' is 'PLOT'.
'of' is the link.
Can you help me to learn more?
(Other definitions for plot that I've seen before include "Story line - bit of land" , "Secret scheme or plan" , "A scheme, or a parcel of land" , "Ground - plan" , "are intriguing" .)
