凱蒂和蘇珊想去看剛上映的電影《龍捲風》，但她們的父母都不准她們去。就在蘇珊大聲抱怨自己總是被當作襁褓中的小妹妹看待時，凱蒂真的變成了蘇珊的小妹妹海瑟。而且凱蒂變成海瑟之後，竟然還能開口說話呢，凱蒂到底該怎麼變回原本的樣貌呢？讓我們一探究竟吧！
Katie and Suzanne want to see the new big movie, Tornado, but neither of their parents will let them. As Suzanne complains loudly about always being treated like her baby sister, Katie actually becomes Suzanne's baby sister, Heather. When Katie is Heather-she speaks. Find out how Katie gets out of this one!
【適讀程度】
Age Range: 7 - 9 years