Barbara "Bunny" Binks comes from a long line of Barbaras, that started with her mother and grandmother. She loves putting her hair up in "bunny buns," playing with her rabbit Ralph, and eating marshmallows. Then one day, she participates in her favorite marshmallow eating contest at field day called "Chubby Bunny," and her classmates start teasing her. But with a little help from her grandma Barbara, Bunny figures out a very sweet solution.