The plot structure of Macbeth can be divided into five main parts:

1. Exposition: The play begins with three witches who prophesy that Macbeth, a Scottish general, will become king. Macbeth and his friend Banquo encounter the witches and are intrigued by their predictions.

2. Rising Action: Macbeth becomes consumed with ambition and, with the encouragement of his wife Lady Macbeth, he murders King Duncan and takes the throne. However, Macbeth’s guilt and paranoia begin to consume him, and he becomes increasingly ruthless in order to maintain his power.

3. Climax: Macbeth’s downfall begins when he orders the murder of his friend Banquo and Banquo’s son, fearing that they will threaten his reign. Banquo is killed, but his son Fleance escapes. Macbeth’s guilt and paranoia continue to grow, and he begins to see ghosts and hallucinations.

4. Falling Action: Macbeth’s enemies begin to gather against him, and he is eventually defeated in battle by Macduff, a Scottish nobleman who seeks revenge for the murder of his family. Macduff kills Macbeth and becomes the new king of Scotland.

5. Resolution: The play ends with Macduff being crowned king and order being restored to Scotland. The witches’ prophecies have been fulfilled, but at a great cost to Macbeth and those around him.