Get part of the story wrong and it's nonsense! (3)
I believe the answer is:
rot
'it's nonsense' is the definition.
(rot can mean nonsense or rubbish)
'get part of the story wrong' is the wordplay.
I cannot really understand how this works, but
'of' could be 'o' and 'o' is found in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
A single letter 'r' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for rot that I've seen before include "Corruption" , "crumble" , "SECOND PART OF 25" , "Decay, moulder" , "Informal nonsense" .)