Clementine has been picked for Friend of the Week, which means she gets to be line leader, collect the milk money, and feed the fish. Even better, she'll get a Friend of the Week booklet, in which all the other third-grade kids will write why they like her.
Clementine's best friend Margaret has all sorts of crazy ideas for how Clementine can prove to the class she is a good friend. Clementine has to get a great booklet, so she does everything Margaret says she should do. But what begins as one of the best weeks ever starts turning into the worst, and being a good friend might turn out harder than Clementine thinks.