Three witches appear and tell Macbeth that he will be Thane of Cawdor and eventually king.
Macbeth is named Thane of Cawdor after the original Thane of Cawdor betrayed King Duncan. The three witches "predicted it".
Macbeth kills Duncan without anyone knowing except for his wife.
Macbeth became king, he payed some people to kill Banquo. After, in the middle of the feast, Macbeth started seeing the ghost of Banquo.
Malcom tests Macduff to see if he wasn,t planning a trap with Macbeth. After Malcom proves that macduff is trustworthy, they both head to end with Macbeth. While this happens, Macbeth is figuring out his future with the witches.
Macduff, who wasn't born from a woman, finally killed Macbeth. Malcom, Duncan's son, became the king.