Aegeon, a merchant of Syracuse, is arrested in Ephesus. Aegeon tells Solinus, the Duke of Ephesus, his tale: he was shipwrecked many years ago while sailing with his wife, Aemilia, and two pairs of identical twins--their twin sons, both named Antipholus, and twin servants, both named Dromio. In the course of the storm, his wife, one of their sons, and one their servants, were lost. At eighteen, Aegeon had allowed the remaining Antipholus and Dromio...

A storm strikes a ship carrying Alonso, Ferdinand, Sebastian, Antonio, Gonzalo, Stephano, and Trinculo, who are on their way to Italy after coming from the wedding of Alonso's daughter, Claribel, to the prince of Tunis in Africa. The royal party and the other mariners, with the exception of the unflappable Boatswain, begin to fear for their lives. Lightning cracks, and the mariners cry that the ship has been hit. Everyone prepares to sink.