In Replacement Teacher, Mr Webster has taken over Milly and Molly’s class for a couple of weeks in Miss Blythe’s absence. But Mr Webster does things differently to Miss Blythe and Milly and Molly don’t warm to the changes…indeed, the whole class want things the way they were. But when Parents’ Day at school is in jeopardy they soon realise they have to change their minds, embrace the changes and discover that all change isn’t bad. In Investigate, something is eating Aunt Maude’s prize-winning vegetables. Using paw prints they find in the garden, Milly and Molly race against time to uncover the culprit and worry the phantom nibbler might be someone’s special pet. Mr Oddbottom, the man from the council, is after the culprit too and the girls worry what he might do if he finds the animal first!