In a movie, I'd definitely involve Ötzi as well (https://en.wikipedia.org/wiki/%C3%96tzi). Ötzi was found like 30 km from the impact site. And could have been a contemporary. E.g., he cursed the guy who shot him and whose village is struck by a meteor in the end.

The plot thickens: a commenter here posted this link, which indicates Ötzi might have been roped in to this story in quite an imaginative way:

"Despite this new evidence, curiously in 2008 the impact hypothesis was revived by some pseudoscientists in connection to supposed observations of a meteorite by the Sumerians or to explain the death of the Iceman as a human sacrifice to prevent a nuclear winter after the impact."

http://historyofgeology.fieldofscience.com/2011/04/landslide...

Unfortunately the sciforums link to discussion of the pseudoscientists is dead

Ötzi and his killers might have been up there looking for the impact site, there might have been a mad rush to find the impact, they might have seen it as some sort of holy item worth killing for.

There was after all a sun cult in Europe at this time.

And we have recovered an iron dagger made from a meteorite in the 14th century BCE. So this phenomenon of tracking a meteorite impact site and finding it might go much further back in human history.