As shortstop for his ""Babe Ruth League"" team (in contrast to Little League, it takes boys from 12 to 15, for a seven inning game on a standard size lot) Steve Marshall is a whirlwind player whose boundless enthusiasm sometimes works in reverse. But as bat-boy of a big league team, he gets into- and out of- more serious trouble. For Steve discovers a gamblers' plot to ""fix"" the Red Birds' pennant game and there are some squeeze plays before Steve's detecting brings the culprits to light and team spirit into full play. Average.