In this scene the main thing that is happening is Macbeth regretting killing Duncan. Another thing that happened in the scene is that Macbeth has forgotten to put the dagger away and his hands are bloody so lady Macbeth does it and gets her hands bloody as well. Then all of a sudden there is a knock at the door a Macbeth thinks that he is in big trouble and will never clean himself from this deed. A quote to prove this is “Will all great Neptune’s ocean wash this blood.”