Story after count will be revealing (8)
I believe the answer is:
telltale
'revealing' is the definition.
('telltale' can be a synonym of 'revealing')
'story after count' is the wordplay.
'story' becomes 'tale' ('tale' can be a synonym of 'story').
'after' says to put letters next to each other.
'count' becomes 'tell' (I've seen this before**).
'tale' put after 'tell' is 'TELLTALE'.
'will be' acts as a link.
(Other definitions for telltale that I've seen before include "Person who gossips or blabs secrets" , "Revealing or indicating something, like blabbermouth" , "Person who blabs or something that reveals" , "Person revealing secrets" , "Revealer of secrets" .)