When Miss Cackle refuses Mildred's request to make her mum Julie magical, angry Mildred enters the Great Wizard's broomstick-flying contest. She's determined to win a Wishing Star so she can give Julie magic herself. But Mildred is thwarted by bitter rival Ethel Hallow, and both girls are disqualified - only for Mildred to make a surprising discovery.

Julie has no idea how to control her amazing new magical powers, and Mildred realises she's made a terrible mistake. She's terrified Julie's secret will be discovered and they'll both be thrown out of Cackles - but Julie's having way too much fun to give up her forbidden magic now.