Tom Canty is a poor English boy who bears a remarkable resemblance to Edward, Prince of Wales and son of King Henry VIII. The two boys meet and decide to play a joke on the court by dressing in each other's clothes, but the plan goes awry when they are separated and each must live the other's life.

The Four Musketeers defend the queen and her dressmaker from Cardinal Richelieu and Milady de Winter.