Oliver and Alonee investigate when science teacher Mr. Buckingham becomes the target of vandalism, but Alonee is not sure if she should trust Oliver's instincts about the crimes.
When Michael and Norman's unusual plants, Stanley and Fluffy, are on display at a plant auction, they meet Curly Temple, a plant who is always ready for fun, and the three plants are soon working together to foil a group of vandals.
Nancy, Bess, and George agree to help George's mom cater a library benefit, where the girls find themselves tracking down a vandal who seems intent on terrorizing the elderly couple that owns the bed-and-breakfast where the event is being held.
When Kristy set out to solve a series of clues left by prankster Cary Retlin, she didn't realize that they would become involved with a real mystery involving serious vandalism.
Birdie Flynn, a gifted Irish Catholic teenager living in East Boston, struggles with the consequences of her brother's part in vandalizing a synagogue.