Find the moment where the protagonist cannot go back to their old life. In The Matrix , it’s when Neo takes the red pill. Before that, the Axis is "curiosity vs. comfort." After that, the Axis shifts.

In film criticism, particularly within the analytical frameworks popularized by Turkish and European film theory, this "something else" is called the —the Film Axis.

Every time the credits roll, we instinctively ask: What was that really about?

It is not the plot. The plot is the sequence of events. It is not the theme. The theme is the message (e.g., "love conquers all"). The is the engine. It is the specific, singular conflict or question that drives the protagonist forward.