All publicity is good publicity.
Well yea, but I'd definitely take sort of "good news" publicity rather than the hackings, money laundering, etc kind of publicity. But then again, I think it's almost impossible to make an enjoyable movie about good things about bitcoin. A documentary would fit better on that category rather than a movie drama.
The movie comes out in 2019. And the halvening is in 2020. So I'd say the movie will help lift bitcoin's price in the run up to the halvening.
Not sure if a halvening will do a significant positive impact on the markets, but let's see.