The picture contains a huge story (4)
I believe the answer is:
epic
'a huge story' is the definition.
'epic' can be an answer for 'story' (I have seen 'Heroic story' mean 'epic' so perhaps 'story' could also mean 'epic'). I'm not certain of the 'a huge' bit.
'the picture contains' is the wordplay.
'contains' indicates a hidden word.
'EPIC' is hidden in the letters of 'the picture'.
Can you help me to learn more?
(Other definitions for epic that I've seen before include "Film or book on a grand scale" , "(Of) immense (proportions)" , "Guardian (body, beast)" , "Exodus, say" , "Long, heroic story" .)