Prince Porspero is bringing all his wealth friends to his kingdom to keep from the Red Death. He has a masqurade party to keep his friends from the town to not catch the illness.
The party the Prince had was to be a distraction from the Red death. It was far from over at this point.
The ebony clock was in a dark velvet room at the back of the kingdom no one bothered to go in there. It struck every hour and it would make loud chimes it made everyone in the kingdom stop what they were doing.
Prince Porspero notice another person that was in the kingdom not invited and he was furious about it and wanted him hanged. He took matter in his own hands and the Red Death stabbed him with the dagger and he was dead.
When the Prince had died by the Red Death everyone in the kingdom died.