The three witches meet on the heath coming up with a plan which will mess up many peoples lives
Macbeth and his friend Banquo who are returning from battle come across some witches who tell them that Macbeth will be king.Macbeth believes it however Banquo wasn't convinced
you shall be king
Macbeth explains to his wife lady Macbeth who then encourages him to kill king Duncan and take the throne for himself
you must kill him
i'm really not sure
Macbeth kills the king when he was asleep stabbing him many times till he bled to death.
when Macbeth came out with the daggers ,lady Macbeth went and planted next to the sleeping guards who she had drugged at the party the night before making sure that her husband didn't get caught, framing them for the murder of the king.