Long story from chimney-sweep I contacted (4)
I believe the answer is:
epic
'long story' is the definition.
(I've seen this before)
'from chimney-sweep i contacted' is the wordplay.
'from' indicates a hidden word.
'EPIC' can be found hidden inside 'chimney sweep i contacted'.
(Other definitions for epic that I've seen before include "Long poem telling of heroic events" , "imposing" , "Long classic film" , "Impressive scope" , "major work" .)