Lucy Willow has a pet snail and green fingers and lives on a train. Silverboots McCoy is a famous footballer. Blossom B is his sweetheart. Mrs. Sparks is the kind of headteacher you hope you'll never have and you wouldn't want to meet her husband, Ricky Sparks, either, or their horrible son Lester. There's a wedding and a wicked plot! Will Lucy's magical green fingers save the day?