Double, double, toil and trouble; Fire burn, and cauldron bubble.
The three witches are preparing a spell to cast on Macbeth. Hectate approves them, and Macbeth then goes to the witches for help.
The witches show Macbeth an armed head that tells him how to beware of Macduff, a bloody child that says he can't be defeated by anyone who was born by a woman. Macbeth also asks about Banquo's future and is showed the line of never ending kings.
Lennox tells Macbeth that Macduff has joined Malcolm in England. Which then makes Macbeth very angry and decided to go to Macduff's castle and kill everyone in it.
Tis two or three, my lord, that bring you word Macduff is fled to England.
Lady Macduffis angry at her husband for leaving them. After a brief conversation between Lady Macduff and her son, Macbeth soon then kills everyone in Macduff's castle.