The last voyage of shipping magnate Onabes's bachelorhood is an extravagant affair, with a ship full of beautiful women and first-class objets d'art. Arsène Lupin III, knowing that Onabes has a villainous past, decides to give him a shock. He disguises himself as a shipwrecked woman, in order to get aboard his ship. The plan works well until Onabes falls in love, at first sight, with Lupin in his female disguise, and proposes!
—Tenchi