The Red Death (disease/pestilence) that is rapidly killing everyone in the Prince's dominion and he picks a thousand friends to hide out in his castle with him.
There is seven rooms all different colors of: Blue, Purple, Green, Orange, White, Violet, and the last one no one went in or near was two colors: Black and a Scarlet Red.
A man with a mask that no one knows or recognizes is in the party and everyone is scared of him.
Prince Prospero tries to kill the masked figure for invading the party and breaking in.
The Red Death kills Prince Prospero and his thousand guest when the clock strikes midnight.
1st symbol is Prince Prospero, which means live long and good, but he dies young. 2nd symbol is The masked man (red death) which symbolizes death. 3rd symbol is the rooms which represent the different stages of life.