Why does the cubby room always smell like farts? Who etched the words "I Am Bug Man" inside my desk? Why is Mom suddenly acting like she has a secret? Nobody said starting fifth grade would be easy, and Penny Lowry's anxiety means a million questions are always spinning through her thoughts. Luckily she's got a lot to look forward to, like her favorite after-school activity, Art Club, and seeing her best friend Violet again after spending the whole summer apart. The thing is, Violet has been acting weird ever since she got back. She never wants to hang out anymore, says Art Club is for babies, and spends all her time with Riley, the meanest girl in school. Did Penny do something wrong? And if she did, can she undo it?