Three weird witches meet on a barren Scottish heath and prophesy that Macbeth will become Lord of Cawdor and then King of Scotland. Macbeth and Banquo encounter the witches after a battle, and Ross and Angus then confirm Macbeth has been named Lord of Cawdor as predicted. The witches also predict Banquo's descendants will be kings, though he will not be. Their prophecies sow seeds of ambition in Macbeth's mind that will have tragic consequences for Scotland and himself.