Worm makes a surprising discovery -- teachers have birthdays! That means Worm and his friends have to find the perfect present for their teacher, Mrs. Mulch.
Eager to help Mr. Pete the Baker make his delicious treats, Flat Stanley and Arthur participate in Mr. Pete's plan to reclaim his customers from a business rival.
Flat Stanley finds him trying out for the baseball team and outwitting the best players until the fairness of his "flat-vantage" is called into question.
Participating in an exciting show-and-tell day during which Miss Plum shows the class her sparkly new engagement ring, Flat Stanley is on the case when the ring goes missing.