When Katie and her friends write thank-you letters to a class visitor, Katie learns that writing letters can be fun.

Pen pals Molly and Olive consider themselves best friends even though they have never actually met because Molly lives in New York City and Olive lives on a farm in Iowa--but when Olive finds a diamond bracelet in the grass the two girls start to wonder if they can finally get the money for one of them to visit the other.

After a string of incredibly good luck, Molly decides that she has developed magical powers--but when she finds out that her pen pal Olive has had an equally surprising run of minor disasters Molly starts to wonder if her magical good luck is somehow responsible for her friend's problems.

In the hopes of receiving some mail of her own, Paula writes a letter to her grandparents.

Cuando Stink compra un gigantesco jawbreaker que no le rompe la mandíbula, escribe una carta de queja al fabricante, ¡y recibe una caja de diez libras de 21,280 jawbreakers por su problema! Este beneficio inesperado de actuar el arte de escribir cartas en la escuela seguro hace que Stink piense. Pronto, Stink está tan preocupado por que le envíen cosas gratis que pasa por alto un sobre garabateado en la pila de correo, hasta que su mejor amigo,...