Macbeth meets the three witches once again, except this time they are creating a strange potion. Macbeth demands to learn of his future from their masters. His first apparition is of an armored head, telling him to beware of Macduff. The second apparition, of a bloody child, tells him that none of woman born shall harm Macbeth. The third apparition, a child with a crown on his head, promises Macbeth that he will never fall until Birnam Wood comes to Dunsinane. Macbeth attacks Macduff's castle.