HMS Pinafore

The H.M.S. Pinafore is a British warship anchored at Portsmouth harbour. Little Buttercup arrives to sell her wares to the sailors. Her vending is interrupted by the arrival of Ralph Rackstraw, a deckhand onboard the ship, who confesses that he is in love with a girl who is far above his social status: Josephine, the captain’s daughter who is supposed to marry Sir Joseph Porter, First Lord of the Admiralty. Josephine tells her father she isn’t interested in marrying this man that she has never met. In fact, she has her eye on a cut deckhand, but out of respect for her position and her father she vows to never reveal her secret love.

Sir Joseph is spotted with an entourage of female relatives and reveals to the crew his masterful thoughts about the social ranks. Ralph takes courage from Sir Joseph’s equality speech and confesses his love to Josephine. Josephine, staying true to the vow she made to her father, spurns his advances due to the difference in their social statuses. Eventually Josephine relents and confesses her love, and the couple plan their escape and possible elopement that very night.

That evening, the captain is alone on deck, puzzling through the strange events of the day. He confesses to Buttercup that he would love her if only it were not for the difference in social statuses. Later, Dick Deadeye, another sailor aboard the ship (who incidentally has been working on a nautical children’s play), reveals to the Captain that Ralph and Josephine are planning to elope. The captain intercepts the couple, and in frustration breaks his vow never to swear. Sir Joseph, who cannot abide by such language, has the captain arrested. He then discovers Ralph was about to run off with Josephine and has him arrested as well. In response, Buttercup reveals her long-kept secret: many years ago, while taking care of two infant boys, one high born, one low born, she mixed the children up. The captain was the common-born child, and Ralph the child of privilege!

Ralph is the one of higher social rank and can choose to marry Josephine. The captain, being common-born, has no social standing over Buttercup and can marry her. Hebe, who has been admiring Dick Deadeye throughout the day, decides to make a go of it with him, and Sir Joseph decides that his own cousin (several times removed), would make a suitable wife and a celebration of the four couples ensues.