Dory, the youngest in her family, is a girl with a very active imagination, and she spends the summer playing with her imaginary friend, pretending to be a dog, battling monsters, and generally driving her family nuts.

Ever since Dory met Rosabelle, a real true friend whose imagination and high spirits match her own, school has been pretty good. But now the class is learning to read, and it's proving to be a challenge for Dory. While Rosabelle can read chapter books in her head, Dory is stuck with baby books about a happy little farm. Dory wishes for a potion to turn her into a reader but things don't go as planned. Suddenly, a naughty little girl who looks an awful...

"Dory's sure that her big sister's friendship troubles have to do with pirates, but she'll have to navigate those rocky waters without her imaginary first mate Mary, who's found an exciting new pal of her own"--