Emmeline and Emmett are twins who find themselves in quite the unexpected turn of events when their estranged Uncle Byron summons them to his home in the bustling town of Langshire. They arrived, but their mysterious uncle is nowhere to be seen. Instead a strange foreigner by the name of Mr. Dao is there not only to greet them, but to inform them Uncle Byron has arranged a rather fantastic journey for both twins. Emmeline is to go to Italy to study with the famous teacher Nofri Donato and Emmett is to sail the seas with Uncle Byron aboard “The Lady Wind Star.” The only problem? Emmeline is the brazen adventure who can think of nothing but riding the high waves and Emmett is a book loving inventor who longs to study in the Italian countryside with Donato. They decide to take fate into their own hands and switch places! Soon, Emmett is on a train to Italy and Emmeline is boarding Uncle Byron’s ship. It’s the adventure—and switch— of a lifetime as long as Uncle Byron or Donato don't discover the truth.