17-year-old Jana has a heart defect that could end her life at any moment. Furious at her fate, she rebels against her illness. Refusing a new treatment for fear of side effects. When she meets the reclusive racing trainer Paul and the seemingly wild stallion ‘Rock My Heart’, it becomes clear that she is the only one who can work with the sensitive animal. Paul convinces her to enter a prize race with Rock. Although at her physical limits, Jana hides her illness from Paul. Will she be able to ride despite her failing health?