A young pauper named Tom Canty is beaten by the palace guards for standing too close to the palace gate. Seeing this, Prince Edward stops the guards and invites Tom into the palace for food. Surprised that they look so much alike and share the same birthday, the young boys are eager to experience how the other lives and decide to switch places temporarily.
Meanwhile King Henry VIII of England dies and the court prepares to crown Tom as the new king. Mark Twain’s classic tale of mistaken identity is full of wild adventures for both boys as they risk all to find out who they are, what they are worth, and what friendship really is.