Right -- step up and go through again (5)
I believe the answer is:
recap
'go through again' is the definition.
(I've seen this before)
'right step up' is the wordplay.
'right' becomes 'r' (common abbreviation).
'step' becomes 'pace' ('pace' can be a synonym of 'step').
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
'pace' written backwards gives 'ecap'.
'r'+'ecap'='RECAP'
'and' acts as a link.
(Other definitions for recap that I've seen before include "Summarise, run over" , "In brief, go over the main points again" , "Go over the main points again, in short" , "Summarising statement" , "Summarise (colloq.)" .)