Lady Macbeth has been sleep walking and saying "scary" things while she does. A doctor hears it for himself and believes Lady Macbeth is becoming mentally ill.
The English army approaches the castle, led by Malcolm, and the Scottish army will meet them near Birnam Wood to join forces in order to defeat Malcolm who they see as a tyrant.
Macbeth is boasting about how he cannot be harmed by anyone who is "woman born", and is ready for the battle, which is still some time away. The doctor tells him that his wife is is kept from rest by “thick-coming fancies,” and Macbeth tells the doctor to heal her from her delusions.
YOU SHALL DIE MACBETH
I WILL FINALLY BE KING.
Their alliance is coming and Macbeth and his army cut off branches to signify the amount of power and people. When they are getting ready for the battle the messenger told Macbeth that the Queen died. She committed suicide.
Malcom, Siward, McDuff and their army are talking about how Siward's son will fight the battle. On the battlefield Macbeth kills Siward's son.
Macduff and Macbeth face off and Macbeth fears for his life once he heard that Macduff is not "Woman Born". Macduff beheads Macbeth and Malcolm is the new King of Scotland.