Act 2 Scene 1: The strain put on Macbeth and Banquo's friendship from the witches prophecies are shown. Macbeth lies to Banquo about his thoughts on the prophecies, which shows that he does not trust Banquo.
Act 2 Scene 1: Macbeth hallucinates about a floating dagger. This hallucination happens because he is filled with guilt as he is about to go kill the king.
Act 2 Scene 2: Macbeth comes back from killing Duncan and he is clearly upset. He has brought back the dagger even though the plan was to leave it in the king's room. Lady Macbeth is not impressed that she has to go put them back herself.
Act 2 Scene 3: The Porter provides comic relief for the audience before he opens the gate for Lenox and Macduff. Macduff goes to awaken the king only to find him dead.
Act 2 Scene 3: Chaos is everywhere while Macduff awakens the rest of the noblemen by ringing the bell. Meanwhile, Macbeth has gone into the king's room and killed the guards. He claims it was out of rage. Lady Macbeth hears the news and faints. Malcom and Donalbain plan to run away because they fear that people might blame them for the dead of their father.
Act 2 Scene 4: Ross and an old man are talking about the strange and supernatural occurrences surrounding the king's death. Macduff arrives and lets them know that Macbeth is being crowned king but will not be attending the king's coronation.