Fallen Fairies; or, The Wicked World, is a two-act comic opera, with a libretto by W. S. Gilbert and music by Edward German. The story is an operatic adaptation of Gilbert's 1873 blank-verse fairy comedy, The Wicked World. In Fairyland, the fairies are curious about wicked mortals, especially their strange capacity for love. They summon three mortal men from the world below to observe them and to teach the men how to live virtuously. The fairies fall in love with the mortals, become jealous of each other and behave badly. The men return to Earth, and the fairies realize that love is overrated.