When 15-year-old Annabelle is sent to an orphanage after her family's farm is repossessed, she refuses to give up on her animals, so she escapes and returns to the farm with two other orphans. There, they discover a magical unicorn that could hold the key to transforming Annabelle's life forever. Now, Annabelle and her friends must unravel the unicorn's mystery, but their quest is not without challenges. Bo Gilmer, Annabelle’s greedy neighbour and the stern headmaster of the orphanage, Mother Chloris, are determined to stop them.