Volte-face of Universal Artists' act
I believe the answer is:
u-turn
'volte-face' is the definition.
(I've seen this before)
'universal artists' act' is the wordplay.
'universal' becomes 'u'.
'artists' act' becomes 'turn' (theatre. I am not sure about the 'artists'' bit.**).
'u'+'turn'='U-TURN'
'of' is the link.
Can you help me to learn more?
(Other definitions for u-turn that I've seen before include "Complete reversal of direction or policy" , "180deg change of direction" , "180 degrees change of direction" , "Complete change of direction" , "Sudden complete change of plan" .)