Two children who look like two drops of water decide to live each other's lives. On one hand, Tom Canty, a poor boy dressed in rags, is forced to beg in the dirty streets of London. On the other hand, Prince Edward Tudor, heir to the English throne, enjoys all the comforts of a luxurious palace.

What will happen when one day they accidentally meet and decide to swap clothes? How easy is it to be a prince? How difficult is it to live in poverty? An incredible adventure filled with misunderstandings, mix-ups, suspense, and twists in a story that continues to teach, move, and entertain young readers.