Run away from the fight and into something completely unexpected (4,4,3,4)
I believe the answer is:
bolt from the blue
'into something completely unexpected' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'run away from the fight' is the wordplay.
'run away' becomes 'bolt' (I've seen this in another clue).
'the fight' becomes 'theblue' (I can't justify this - if you can you should believe this answer much more).
'bolt'+'from'+'theblue'='BOLT FROM THE BLUE'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for bolt from the blue that I've seen before include "unexpected event" , "Sprint by university athlete" .)