The document summarizes key events in Shakespeare's play Macbeth. It describes Macbeth meeting three witches who prophesize he will become Thane of Cawdor and King of Scotland. Upon learning he has become Thane of Cawdor, Macbeth and his wife Lady Macbeth plot to kill King Duncan during his stay at their castle. Their scheme succeeds, but it leads to a series of violent acts as Macbeth works to maintain his power, including arranging for the murder of his friend Banquo who suspects his involvement in Duncan's death.