Crossword Genius

Mishap where Oscar takes over lead in 'Sunset Point' (8)

Ross

I believe the answer is:

occident

I'm a little stuck... Click here to teach me more about this clue!

'mishap' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

'oscar takes over lead in sunset point' is the wordplay.
I cannot quite see how this works, but
'oscar' could be 'o' (phonetic alphabet: alpha, bravo, charlie etc.) and 'o' is present in the answer.
'point' could be 'den' (den is a kind of point) and 'den' is located in the answer.
This explanation may well be incorrect...

'where' is the link.

Can you help me to learn more?

(Other definitions for occident that I've seen before include "West End?" , "The West as opposed to Orient" , "Europe and America" .)

I've seen this clue in The Telegraph.
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