Macbeth hires two Vagabonds to kill Banquo and his Son in order for Macbeth to stay in power. He meets with them in secret under the cover of night for an agreed amount of coin. Macbeth Does not find the vagabonds qualified for this.
Macbeth does not trust the two original vagabonds so he hires a professional that was well known through the land to make sure the job was complete.
The Vagabonds and the professional find Banquo's campsite and kill him but in the struggle, Fleance escapes and runs far away
The three Killers go back to Macbeth's castle to tell him of Banquo's death and that Fleance had escaped. Macbeth orders the men to take leave and to never speak of this or be put to death.
Macbeth struck with guilt sees Banquo's Ghost and the State Dinner and Lady Macbeth orders the guests to leave.
Hecate is angry that the witches interfered with Macbeth's Life and she tells them that they must fix what they have done to him. So the witches plan to destroy Macbeth