The film's plot hinges on such an intricate train of small related developments that each of them needs to be crystal clear.
The plot of "The Thief Lord" hinges on a device that can put growing up in fast forward or reverse.
The plot hinges on international and domestic secrets but it is sober and sound.
There's not a woman in his book, the plot hinges on unkindness to animals and the black characters mostly drown by Chapter 29.
So this story would be over in a single scene if its plot hinged only on seduction.
If it isn't staged very often, one reason is that the plot hinges on a twist that is hard to swallow today.
Each day's plot hinges on a problem that develops at work and the main character's "race against time" to sort it out.
The plot hinges on revelations made in her psychoanalytic sessions concerning her mother's death.
The very plot of "Chicago" hinges on turning notoriety into theatrical celebrity.
The plot hinges on the mis-interpretation of a 100 year-old law regarding statutory duels (decided by drawing cards).