Katy, a sixteen year old girl lives with her mom since her dad died in a car wreck when she was two. She lives on a farm where nothing ever exciting happens. Almost everyday Katy goes for a ride early in the morning on her horse Delilah—a retired world champion racehorse and jumper. Katy has been looking for a new jumper horse lately. One day when Katy and Delilah are out wandering around, she sees a beautiful grey dapple mustang that could change her life forever and make her happy again. Will Katy decide to turn her life around for good, or will she stay as the lonely, unhappy girl?