On Helping Writers become Authors:
The Third Act begins with another life-changing plot point.
More than any preceding it, this plot point sets the protagonist’s feet on the path toward the final conflict in the Climax.
From here, your clattering dominoes form a straight line as your protagonist hurtles toward an inevitable confrontation with the antagonistic force.
Because the entire Third Act is full of big and important scenes, this opening plot point, by comparison, can sometimes seem less defined than the First Plot Point and the Midpoint.
However, its thrust must be just as adamant.