The scene opens with three witches discussing when to approach Macbeth. They decide to meet after his victorious battle on the top if a hill.
After hearing word of his valiant acts during the battle the king Duncan decides to name Macbeth Thane of Cawdor.
The third scene opens with the three witches discussing a curse they placed on a sailor's wife who refused to share chestnuts.Macbeth and Ban quo enter. The witches then prophesied that Macbeth would become Thane of Cawdor and eventually king. They also claimed to his best friend Banquo that his children would one day rule. Banquo is skeptical and Macbeth is extremely excited.
The old Thane of Cawdor is to be executed for lack of bravery in battle. Malcolm explains that he showed remorse and begged for forgiveness before him death. Duncan, the king, says he is not forgiven. He then goes on to praise Macbeth. Macbeth compliments the king secretly thinking about how the witches were right about his new position as Thane of Cawdor.
Macbeth writes a letter to his wife explaining his belief that the witches were correct. Lady Macbeth becomes greedy and begs for the strength to eliminate Duncan so she will be Queen. She then convinces Macbeth to murder him.
Macbeth and his wife carry on with there plan. As Duncan praises Macbeth they are plotting to kill him. Despite their plan they continuosly say they wish to serve him.