Mark Setzer has a lot on his mind. He's worried about his upcoming bar mitzvah, and he misses his best friend, who's moved to the rich side of town and started hanging out with the obnoxious kid they used to make fun of. Mark doesn't need the aggravation of his mother signing on to manage his Little League team.

But if "Mother Bagel" complicates Mark's life, she's great for the team. Suddenly, they're winning games and headed toward the championship. The problem is, Mark has some information that could change everything, and he doesn't know what to do with it. He's a friend, a teammate,...