"Wildfire" follows troubled Kris Furillo who, after serving time at a teen detention center, is given the opportunity to start a new life. Her talent with horses is recognized by a volunteer and local trainer Pablo, who arranges a job for her at the Ritter's family run ranch, Raintree. Thrown into a completely new environment, Kris must learn to deal with the challenges of fitting in, while trying not to disappoint the one family willing to give her a chance. The Ritters are facing challenges of their own even as they reach out to help Kris. Patriarch Henry Ritter and his daughter Jean are in a critical stage of their battle to save the ranch from financial ruin. Kris and Wildfire must help them get back on the map in the world of horse racing.