The idea of this story is the red death came, it was horrible so this prince locked everyone up who was not affected.
The rising action is the party and how everyone is forgetting the red death and how the people are suffering. The only reminder is the clock.
The climax of the comes after the Red Death arrives at Prince Prospero's masked ball. Prospero had locked himself and a thousand of his closest friends inside an abbey in order to escape the disease the plagued his land