Kate Ludwig is now turning eleven and gets a very important letter. Her father is a wizard but her mother and sisters Libby and Paige are muggles. Kate lives in the street in Privet Drive and her address is number 6. And she goes to the school 'Hogwarts School Of Witchcraft And Wizardry.' Her father told Kate all about it. Watch Kate and her friends and their avenger through Hogwarts.