Anne, Dick, and Julian are disappointed when they can't spend the summer at Polseath as they usually do. They begin to cheer up though, on hearing that they are to go stay with their aunt and uncle, who have a daughter around their age. They expect their cousin to be glad to meet them, but Georgina (who dresses as a boy and refuses to answer to anything but George) is very unfriendly. They become friends however, and George takes them to see her island. They find map of the ruins on the island, and written on the part with the dungeons 'Ingots'. Some adults find out about the treasure as well, and try to buy the island from George's father. George, Anne, Dick, Julian, and George's dog (Timmy) have to find the treasure before the island is sold, to prevent George's father from being forced to sell it.
Without actually lying, George hides the fact that she is taking care of a dog named Timmy from her parents. They take a box out of their uncle's study without permission, while he's asleep. The men who are trying to buy the island are bad: they lock the children in a dungeon and threaten to shoot George's dog.
The men on the island threaten to shoot George's dog.
Drug and Alcohol Content
Crude or Profane Language or Content
This is a very good book for young readers, older kids may not find it very exciting or challenging.