The most common and most likely answer to this crossword clue is the 8 letter word SCENARIO
I've seen this crossword clue in Independent
S
C
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A
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More clues leading to the result SCENARIO
- Care is on revised plan
- Wrought iron case in outline
- Plot summary appearing as Arsenic and Old Lace?
- Coins are switched? That might happen
- Devious cronies concealing a plot
- Provided absorbing translation of Racine synopsis
- Story outline in coarse plays
- So, a nicer new storyline
- No time at all to get wind of wild film idea
- Icons are arranged in a setting
Buddy explains!

The straight part
We know that "film idea" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case film idea = scenario.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SCENARIO mean?
SCENARIO noun- An outline of the plot of a dramatic or literary work.
- A screenplay itself, or an outline or a treatment of it.
- An outline or model of an expected or supposed sequence of events.