Publisher's Synopsis
Millie has had enough of 4th grade and can't wait for summer to start! Along with her puppy, Toof, she has plans to kick off the first day, Memorial Day, in a big way. But when a school bully shows up and a mysterious disappearance takes place, Millie loses a lot more than she realizes.
With the help of her quirky family and her best friend, Sponge, Millie sets out to solve the mystery and save the day while she learns what it means to actually be a friend, not just have friends. Can she do it? She might, but it will take a lot of love, and patience, and The Thumb of All Rules!
