Frederic has never seen a woman's face--no other woman's face, at least, but Ruth's, his old nurse, who adores him--and thus there come as a vision of loveliness to him the figures of the many daughters of Major-General Stanley. They have penetrated into the rocky cove during a picnic. Frederic, sensitive about his detested dress, hides from them for a while, but soon he reveals himself and entreats them all to stoop in pity so low is to accept the hand and heart of a pirate. Only one of them, Mabel, is ready to take him for what he is, and the love-making between the two is swift and passionate. It is interrupted by the return of the gang, each member of which seizes a girl and claims her as his bride, and during this lively interlude there arrives old General Stanley. He has lagged behind the rest of the party.
The General, a resplendent figure in his uniform, knows a good deal about the most abstruse and complicated sciences, though he proclaims that he knows no more of tactics than a novice in a nunnery. In this he holds himself to be "the very model of a modern major-general." Completing the candid recital of his attainments and want of them, he inquires what strange deeds are afoot, and he has no liking either for pirates as sons-in-law or for the prospect of being robbed wholesale of his daughters. But where is the way of escape? Luckily the General has heard of these Penzance pirates before, and he wrings their sympathy with the sad news that he, too, is "an orphan boy." For such tender-hearted robbers that is enough. They surrender the girls, and with them all thoughts of matrimonial felicity, and restore the entire party to liberty.
The second act is laid in a ruined chapel at night. General Stanley, surrounded by his daughters, has come to do penance for his lie before the tombs of his ancestors, who are his solely by purchase, for he has owned the estate only a year. Frederic is now to lead an expedition against the pirates. For this perilous mission he has gathered together a squad of police, who march in under their sergeant, all of them very nervous and under misgivings that possibly they may be going to "die in combat gory." Soon after they have left there is a whimsical development. Frederic, alone in the chapel, is visited by the Pirate King and Ruth. Covering him first of all with their pistols, they tell him that they have remembered that he was born on the 29th of February, and that as he thus has a birthday only every four years he is still but five years of age!