Sofia Ruiz adores her horse, Sundance, a gift from Gramma Lisa who has cared for her during her mother's absence. Weeks before her eleventh birthday, Sofia's mother unexpectedly returns, demanding she pack and leave Sundance behind. Anxious, lonely, and determined to reunite with Sundance, Sofia searches for a way to return to Gramma Lisa. After meeting the neighbor's miniature horses, Sofia is invited to join the Mini Whinnies Horse Club. As her horse and human friendships grow, Sofia wrestles with where she belongs. Will she ever see Sundance again? A heart-warming story to inspire horse lovers of all ages.