The Masque of the Red Death is the story of Prince Prospero and his hundreds of wealthy, noble guests on the night of a fabulous masquerade. Holed up in the Prince's private abbey because of fear of a plague sweeping through the unnamed country, Prospero and his guests have a night of forced merriment further intensified by the presence of a mysterious masked figure in red. At the story's conclusion the figure is revealed to be a personification of the plague and Prospero and his guests are doomed.
Boasting the largest collection of book summaries, BookRags is the best option for titles you can't find elsewhere. They offer all of the basics (quotes, chapter summary, characters, historical context, literary criticism) but also walk through a few major topics that recur throughout the book, which can be particularly useful for essay writing.
If you're bored by traditional book notes, try Shmoop! They write their summaries in an approachable, entertaining style. Their comprehensive offering includes chapter by chapter summaries, themes, quotes, character analysis, study quizzes, and even flash cards and infographics.