Opera York - Pirates of Penzance

The story concerns Frederic, who, having completed his 21st year, is released from his apprenticeship to a band of tender-hearted pirates. He meets the daughters of the incompetent Major-General Stanley, including Mabel, and the two young people fall instantly in love. Frederic learns, however, that he was born on 29 February, and so, technically, he has a birthday only once each leap year. His indenture specifies that he remain apprenticed to the pirates until his "twenty-first birthday", meaning that he must serve for another 63 years.[a] Bound by his own sense of duty to honour his bond with the pirates, Frederic's only solace is that Mabel agrees to wait for him faithfully. The pirates' maid-of-all-work, Ruth, eventually reveals a fact that saves the day.