When young Bobby and his little pony, Charley, make their Saturday stopover at Grandma Winnie's home, Bobby can barely contain his excitement about sharing some happy news. After clopping through the neighborhood together early that morning, an exhausted Charley snoozes in her living room while Bobby reveals his surprise. As a reward, Grandma Winnie makes an extra-special breakfast for her darling grandson, not forgetting his favorite pal. But, as soon as they finish their yummy food, off Bobby and Charley go on a special mission related to their big news. What important quest could take Charlie away from his delightful weekly visit with Grandma Winnie?