When Alice and Helen go camping on Flea Island with the Junior Gophers, Alice's big brother Ronald tells them about Big Minnie, the scary monster that lives in the woods, so Martha goes along to protect the girls.

"A Spanish bilingual book." At head of title: Martha speaks. At head of Spanish title: Martha habla. "Based on a TV series teleplay written by Melissa Stephenson and Raye Lankford ; based on the characters created by Susan Meddaugh."