When the owner of the Minnesota Twins dies suddenly, his will bequeaths the team to his grandson Billy, a devotee of baseball who, although only 12, has devoured voluminous lore, knows the team intimately, and has shown an uncanny sixth sense of what they need to improve. They hate their manager, so Billy quickly fires the SOB, winning their instant approval. However, this turns to dismay when he announces their new manager: Billy Heywood. How will Billy convince a gang of proud, tough men to stick around and take orders from a kid? On the other hand, what's to lose-- the team has nowhere to go but up. 这一年的暑假，比利的美梦成真了！原本就是棒球迷的他继承了祖父的棒球队，决定好好的整顿一番。聪明的比利想到一个好方法，就是让球员重新认识棒球。渐渐地，球员们发现棒球竟是如此的好玩有趣并且乐在其中，疯狂地爱上它。在比利的率领之下，棒球队能不能出击全垒打赢得冠军呢？
