Macbeth and Banquo, who are generals in the army of King Duncan of Scotland, have just fought a battle and have defeated the Thane of Cawdor. The fame of their victory reaches the King before they have returned from the battle. On their way back, Macbeth and Banquo run into three witches, who hail Macbeth as thane of Glamis, Thane of Cawdor and king after that Banquo demands a prophecy as well and the witches say that he will be father of kings though he himself will not be one. The witches vanish but part of the prophecy is confirmed immediately when two messengers from King Duncan meet them and greet Macbeth as the Thane of Cawdor, who has been condemned to death. The partial fulfillment of the witches' prophecy and King Duncan naming his son Malcolm Prince of Cumberland motivate Macbeth to plot the King's death. When he shares this information with Lady Macbeth, she agrees to the plot and is more motivated than Macbeth himself. Duncan and his sons visit Macbeth's castle and their plan to kill him develops.
             Banquo is still shaken by the witches' prophecy that he will be father of kings and fights his own desire to hurry things up for his own benefit. Macbeth, on the other hand, takes advantage of the king visiting his castle. His wife drugs Duncan's guards and Macbeth is able to stab the king to death. The next morning, after Macduff discovers the dead king. Macbeth and Lady Macbeth pretend to be very disturbed and sad by the death. Macbeth doesn't want anyone to suspect him so he pretends to be mad at the guards for denying that they killed the king and Macbeth has them killed. Malcolm and Donalbain, the King's sons, are afraid that the same thing will happen to them and they leave the country and Macbeth is crowned the king.
             Macbeth knows that Banquo suspects him of the Kings' murder and since he is jealous of Banquo
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