Macbeth and Banquo, Scottish generals, are returning after crushing a rebellion against Duncan ( King of Scotland ), when they are met by three witches. The witches prophesy that Macbeth will become thane of Cawdor , then later on he will become King. Banquo is told that he will never become King, but will be the father of Kings. Macbeth is horrified, for shortly afterwards a messenger arrives to tell him that Duncan has created him Thane of Cawdor as a reward for his services. Macbeth writes the news to his wife. Lady Macbeth reads th ....