The document provides a summary of the key events that have occurred so far in William Shakespeare's play Macbeth. It describes Macbeth's rise to power after he is prophesied by the witches to become King, including his killing of King Duncan at the urging of his wife Lady Macbeth. It also summarizes the events that follow, including Macbeth having Banquo and his son murdered due to another prophecy about Banquo's descendants becoming kings. The summary concludes with characters like Macduff preparing to go to war against Macbeth.