Because of some reasons, many other people were to be executed whilst Banquo was one of them. Some managed to excape in which soon planned to create a rebellion but Banquo was beheaded and died.
Act 5 Scene 1
Macbeth then was invited to another party in which he entered and found himself looking at an empty seat at first but then Banquo's spirit was irriating him by only talking to him. When Macbeth didn't sit down and soon shouted some random stuff, the others in the meeting thought he went crazy. Lady Macbeth immediately told the particpants that his husband was ill and took him away.
Act 5 Scene 5
Macbeth was haunted by Banquo's spirit in which he went back to the 3 witches to ask them for more information in which they said:"Be violent, bold, and firm. Laugh at the power of other men, because nobody born from a woman will ever harm Macbeth.Be brave like the lion and proud. Don’t even worry about who hates you, who resents you, and who conspires against you. Macbeth will never be defeated until Birnam Wood marches to fight you at Dunsinane Hill."
Act 5 Scene 8
Whilst Macbeth went to find the witches, Lady Macbeth killed herself because of the 'blood' that was on her hands. Lady Macbeth hardly slept and once in a while, she would look at her hands and imagine that she can see blood. She even told the docter that it was an illness that she had. She soon couldn't take everything in and killed herself.
When Macbeth had returned, he got the news that Lady Macbeth had died and became sad. He was relieved on what the 3 witches said because no person is not born from a mother and that a wood cannot walk/ move towards him to attack him. However, he was not right because one day, he got the news from a messenger the the wood was moving and that the rebellions came to fight.
Macbeth went to fight the rebellions without getting hurt until he fought their leader, Macduff. Macduff was known to be not born from a mother because his mother died before giving birth to him in which he was cut out in order to be alive. Macduff beheaded Macbeth straight away and became King himself.