Inside the banquet hall, the meal has been prepared. Macbeth had invited the guests to take their seats, the feast is about to begin.
But before the feast began, the first murderer reported to Macbeth that Banquo was deceased but his son had managed to escape. Macbeth became anxious , now there was a witness to the crime he commended.
Once all took their place in seats, Macbeth approaches his chair in order to seat himself. He was shocked to see it was not empty, and was even more shocked to see who took his throne.
Symbolism of how Banquo's sons will become kings and Macbeth will not.
The ghost of his once best friend, Banquo sat in the kings throne with a look of dissappointment planted on his face.
While Macbeth is freaking out about the fact that he just saw a ghost, Lady Macbeth assures the feasts' guests that this is just the "king's" mental illness showing through. She lies and tells them that Macbeth has suffered with this illness since his adolescence.
Everything is fine my people...
Macbeths "momentary" fit doesn't subside, and Lady Macbeth asks all the guests to leave in a hurry, she once again assures them all will be okay, but he needs to be alone.