This sequel to Way of the Warrior Kid finds Marc having a very bad day on the last day of school. His nemesis, Nathan James, has called him "Plate Face" one too many times, and Marc gets so angry that he throws a fake pumpkin at Nathan-- which ricochets off him and hits their teacher! The principal ends up calling Marc's Uncle Jake, who has just arrive in town to spend the summer with Marc. Uncle Jake doesn't get mad; he tries to get to the root of Marc's problems and help him to fix them. It's not Nathan's fault that Marc was sent home, it's Marc's fault for allowing himself to become angry and act irrationally. In the same respect, it's not Marc's mother's fault that she won't buy him a new bike; it's Marc's fault for not taking good care of the first bike she gave him. Marc ends up spending time in a summer camp which Nathan also attends, and part of his job over the summer is to learn to understand Nathan's behavior and get along with him. He also continues his physical training (Uncle Jake, remember, is a Navy SEAL), fix up his bike, and learn to get his anger under control. In the end, Marc finds that doing these things, while they may seem boring, make him a better person.