Plotted to have angry characters adopt face masks etc (6)
I believe the answer is:
mapped
'plotted' is the definition.
('map' can be a synonym of 'plot')
'angry characters adopt face masks etc' is the wordplay.
I cannot quite understand how this works, but
'face' could be 'map' (I've seen this before) and 'map' is present in the answer.
The remaining letters 'ped' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'to have' acts as a link.
Can you help me to learn more?
(Other definitions for mapped that I've seen before include "Charted" , "Made representation of like cartographer" .)