3 witches talk about let's go to meet Macbeth. Duncan wants to know war happen, Macbeth can cut the head of the traitor's leader and put it on our castle wall, so Duncan appoints Macbeth is Thane of Cawdor. Macbeth and Banquo meet 3 witches, they tell Macbeth and his friend 3 thing are Macbeth is Thane of Glamis, become Thane of Cawdor, and Banquo will be father king. Macbeth thinks over about witches tell them. Duncan will go Macbeth's castle, so Macbeth goes ahead and writes letter to his wife that king Duncan goes their castle. Lady Macbeth has the plan to murder Duncan because she wants to be queen, and she tells Macbeth to do it, he is afraid it fail, but lady Macbeth tell him don't worry.