Macbeth is a Shakespearian tragedy about Macbeth, a nobleman and renowned warrior. After witches inform him that he will be king, he travels with his companion Banquo to King Duncan's castle. Macbeth's wife, Lady Macbeth, convinces him to kill Duncan and he obeys. After killing Banquo and others, Banquo's ghost returns to the castle, haunting Macbeth. Macbeth receives a tragic prophesy from the witches, Lady Macbeth kills herself out of guilt and King Duncan's son, Prince Malcom, invades the kingdom and kills Macbeth.
King Duncan is attended by a captain recently wounded while saving Duncan’s son Malcolm from capture by the Irish. He tells Duncan of how Macbeth and Banquo, the two generals, have defeated the Irish and Norwegian armies and how Macbeth had vanquished and killed the traitor Macdonald. The Thane of Ross soon enters and tells Duncan of how the Thane of Cawdor defected and joined the Norwegian forces to fight against the Scottish. Duncan announces that Macbeth shall take the role of Thane of Cawdor as a reward for having led the victorious army in battle. Ross departs to share the news with Macbeth.