The book is about a young unicorn named Isabella who has lived in the same forest her whole life, but her family decides to move to a new forest. Isabella is scared and anxious about the move, worrying about fitting in and making new friends. As she explores the new forest, she meets other unicorns and a wise old owl who helps her with her worries and fears. With the help of her family and new friends, Isabella learns to adapt to her new surroundings and embrace new experiences.