"This is a story about you"

Macbeth

The action of the film is built on Macbeth's thought process, in which he again goes through past events. This happens after the death of Macbeth, when the brain is still alive in the last seconds of life, and the person is still in the cage of his mind for some time. Is this happening in Macbeth's head or is it part of the thought process of each of us?