The three murderers kill Banquo but Fleance escapes
Macbeth and banquo talk to the witches. They tell Macbeth he will become king. They tell banquo he will not be king. They say his children will rule though. They also saw Macbeth will be than ever of candor before he is king.
The murderers kill Macduff's family because he fled.
Macbeth murders King Duncan with a dagger. He does this while King Duncan is sleeping in Macbeth’s castle. Macbeth does this so he can become king. Macbeth blames King Duncan’s death on the king’s guards. King Duncans’s sons flee after his death in fear that they too will be murdered.
Macduff kill Macbeth
The murderers that Macbeth hires kill Banquo. Banquo holds them off long enough for his son to escape. Macbeth says he will treat the murderers well if they kill Banquo. They kill Banquo brutally with daggers. Fleance escapes on a horse.
Macduff flees Scotland. He goes to England and meets with Malcolm. He tells Malcolm to come to Scotland and end Macbeth's rule. While he is gone Macbeth has his family savagely murdered. This makes Macduff hungry for revenge against Macbeth.
Macduff, the other thanes, and their army take control of Macbeth's castle. Macbeth fights but he doesn't win. Macduff kills him in a sword fight. Macduff cuts off Macbeth's head. He then puts Macbeth's head on a spear.