Hannay not really the hero of the thirty-nine steps!!! SPOILERS
Why bother to make a version of the story that completely rewrites the thing - all the previous versions have taken liberties and added a romantic subplot etc., but Hannay is always the hero. This new version puts a twist on it by making the romantic interest into a female James Bond, with Hannay as a bemused and unwitting decoy who is increasingly reduced to functioning as a sidekick to the heroine.
Quite why the writer Lizzie Mickery subverted the love interest addition by making her an expert driver/marksman/athlete/gymnast and multilingual with an eidetic memory [which is apparently inherited(!) through the male line of her family(!!)] made it absurd. Why not make a film about Mata Hari or simply use the character that she'd invented to create an original story with a female lead rather than gutting Buchan's classic novel.
This also leads to bizarre plotting, if she's a British spy, then why does she force their car off the road, allowing the pursuing German agents to catch up & take them prisoner, running the risk of: a) them being shot or b) the German spies spotting her picking Hannay's pocket and/or hiding the all-important notebook near the car [in a location invisible to the German agents who are later ordered to return to search the area thoroughly!].
There's some classic thespianism too, during the scene after the election meeting, where the duo try to escape from the German spies by stealing their unguarded car - they spot 2 children walking past the car & bribe the boy to pull the girl's hair to make her scream whilst they turn the crank handle, after the 2nd or 3rd time the girl screams before the boy even pulls her hair :-)