Description
Jack and Annie are on a mission to learn the final secret of happiness! This time, the magic tree house whisks them away to the super-cold continent of Antartica – the land of ice and snow and penguins – where they’re supposed to find the Cave of the Ancient Crown. But when they meet a group of scientists and reporters, Jack and Annie are surprised to discover that they are in contemporary times! How will they find an ancient crown if they’re with these people?
