You shouldn't cut through someone's film set.
Nancy is walking through a busy Hollywood studio lot, where a director is filming in the center, looking for her actor husband Tom.
Nancy wants to pick a path to take to get to the other side of the lot.
Nancy decides to exit the studio lot and go all the way around to the other gate on the other side.
Nancy decides to go through the middle, the fastest way, and cut through some film sets.
The director of the movie continues to film the movie and completes his scene.
The director of the movie is furious that Nancy has ruined his shot, and he has to waste money on another take.