A B-List actress uses blackmail and wit to achieve her goals.

A ageing B-list actress uses deception, blackmail and wit against a sexist director who dumped her for a younger starlet to star in his next big movie and catapult herself into the A-list.

(But this is SOP in Hollyweird, so....)

In order to win an Oscar, a B-List actress uses blackmail and wit against a powerful producer to get a staring role in his next big movie.