Seventeen-year-old Astrid Sullivan belongs to a family of compulsive gamblers, and now that her father has been laid off from his job in Detroit and lost all their money betting on the Titans, which are half-horse, half car, and race around impossible tracks, her family is falling apart--but when Astrid's new friends give her the chance to participate in this year's Titan races, she thinks she sees a way to win some money and keep her family together.