Final answer:
The 'Dark Night of the Soul' is the stage of the screenplay where the protagonist hits their lowest point before bouncing back and achieving victory.
Step-by-step explanation:
The stage of the screenplay described in the question is known as the 'Dark Night of the Soul'. It is a crucial point in the story where the protagonist is faced with a seemingly insurmountable challenge, leading to a period of despair and hopelessness. However, this stage also serves as a turning point, as it sets the stage for the protagonist's eventual comeback and ultimate triumph.
Learn more about Screenplay stages