The story follows Emma, a young and passionate horse rider, who receives an invitation to spend her summer at a prestigious horse-riding ranch in the United States. However, once she arrives, she learns that the ranch is facing financial struggles, and the owner is worried about losing the property. On top of that, there are rumors of a mysterious wild stallion connected to the ranch’s history, and strange events begin to unfold.

With the help of her new friends, including Oliver and other ranch staff and students, Emma embarks on an adventure to uncover the truth behind the mysteries surrounding the ranch. As she trains and cares for her horses, Emma discovers hidden clues that reveal a long-lost family treasure tied to the ranch’s legacy.

Emma’s journey involves balancing her responsibilities at the ranch, including horse care, training, and participating in competitive events to earn funds that can help save the property. Throughout, Emma and Oliver uncover more clues and face challenges that test their friendship, riding skills, and courage.