Third grader, Kathryn Jones McGarity, her friends call her KJ, has been playing baseball with her four older brother's since she could walk. While each of them has starred on her father's little league team, the Tomahawks, KJ has only dreamed of being the next hero on the squad. The only problem is that dad won't let her try out for the all boy team. As KJ finds out the hard way, sometimes your dreams don't turn out exactly as you have planned. KJ throws her father and the town a big curve as they learn about Knuckleball Jones and the first pitch.