what is machbeth about

A brave Scottish general named Macbeth receives a prophecy from three witches that one day he will become King of Scotland. Consumed by ambition and spurred to action by his wife, Macbeth murders the King and takes the throne for himself. He becomes consumed with paranoia and guilt. You can see a more detailed summary below:

https://www.gradesaver.com/macbeth/study-guide/summary