Homer joins the power plant softball team, having a secret weapon called "Wonder Bat." He scores lots of home runs and grandslams at every bat. Soon the team plays Shelbyville power plant for the championship. To make sure he wins, Mr. Burns hires Major League Baseball players to secure the win against Shelbyville, giving them jobs at the plant.
All the original power plant players are replaced, Homer being replaced by the Darrel Strawberry. However, nearly all the players suffer misfortunes leading up to the game, and Burns is forced to bring back the original power planbt workers. Strawberry is still on the team though.
At the last ball, Burns switches Strawberry for Homer to "play the percentages." The ball hits Homer in the head, knocking him unconcious, however, it counted as a hit, allowing the man on third to score and Homer wins the Championship.