Arthur tries valiantly to save his sister from being disappointed when Mary Moo Cow, slated to entertain at D.W.'s birthday party, cancels at the last minute.
Arthur and his teammates are so impressed with the new uniforms and treats given to them by their new coach, they fail to realize at first that he does not know how to coach soccer.
Arthur and his friends get very involved in training for a race to raise money for a literacy drive, but Fern, who just wants to rest and read, seems to have the best strategy.
Arthur's wrong guess about the identity of the secret admirer sending him valentine messages leads to teasing by the other children, but clues in additional messages allow him to get his due.