Nitro, a pit bull having been born into a cruel world at a kennel is raised by the entire cast of the book including his best friend Oscar, a dachshund, and his idol Laser, a racing greyhound. As Nitro grows up, Oscar tries to shelter him from finding out his true fate being born a pit bull, knowing full well what some humans make pit bulls do. Once everyone realizes just how much danger Nitro is in, the plot to escape becomes their main goal in life, but is it too late?