Macbeth tells of a man who is deceived by himself and his wife. The play opens with thunder and lightning and the appearance of three witches--supernatural beings. Due to the fact that this is the beginning of the play, the opening Act, it foreshadows the central theme of the play--evil.--Submitted by Shanika Basically, there are three witches who predict Macbeth\'s future; it then plays on his mind when the first prediction comes true--he becomes Thane of Cawdor. Then he would go on to be king. He writes and tells his wife and they were both really excited. When Macbeth gets back to his castle, he and his wife decide that the only way he can become king is if they kill King Duncan. With power gone to his head, Macbeth slowly starts to \'lose the plot\', as does Lady Macbeth.--Submitted by Anonymous