Gilbert and Sullivan change the characters, which Sullivan found artificial and lacking in "human interest and probability", as well as being too similar to their earlier opera, "The Sorcerer". As dramatised in the film "Topsy-Turvy", the author and composer were at an impasse until 8 May 1884, when Gilbert dropped the lozenge idea and agreed to provide a libretto without any supernatural elements. The story focuses on a "cheap tailor," Ko-Ko, who is promoted to the position of Lord High Executioner of the town of Titipu. Ko-Ko loves his ward, Yum-Yum, but she loves a musician, who is really the son of the
Gilbert and Sullivan and "Ruddigore", which were less successful than the seven other operas from "H.M.S. Pinafore" to "The Gondoliers", Sullivan asked to leave the partnership, saying that he found Gilbert's plots repetitive and that the operas were not artistically satisfying to him. While the two artists worked out their differences, Carte kept the Savoy open with revivals of their earlier works. On each occasion, after a few months' pause, Gilbert responded with a libretto that met Sullivan's objections, and the partnership was able to continue successfully. In April 1890, however, during the run of "The Gondoliers", Gilbert challenged Carte over the expenses