Prince Prosperos decides that by locking all the rich/wealthy people in his palace no would catch the Red Death (a disease)
Prince Prosperos sets seven rooms up all different colors the seventh one is red and it looks creepy. So no one goes in there.The Clock dings all night and the closer it gets to midnight the sooner they know the Red Death will arrive.
The clock strikes 12 and a hooded figure walks in. Everyone knew the Red Death had finally arrived