Molly is golly-sure that she knows how to find the perfect pony. She's been planning her whole life for this. She's even made a list! When Grampy Blair offers her a muddy, scruffy pony that doesn't match her list at all, Molly isn't so sure. The pony doesn't even have a name! To help make up her mind, Molly and the pony set off on a trail ride where an adventure, a new friendship, and maybe even a perfect new name await.