Principal Skinner initiates a new system that alerts parents when their children do poorly in school. Lisa receives notice that she is failing gym class and unsuccessfully tries out for various teams to make up for her grades. After one of his hockey games, Bart flings garbage at Lisa with his stick. Apu notices how well Lisa deflects the projectiles and signs her up as his team's goalie.

Lisa leads Apu's team, the Gougers, to their best season ever. Homer lavishes attention on Lisa, making Bart feel jealous. The conflict heightens between brother and sister when Homer announces that Lisa's team and Bart's team will face off in a game.

News spreads about the match and blood-thirsty Springfield gets caught up in the Simpson rivalry. The game comes down to a penalty shot that pits Bart against Lisa. As they stare each other down, they realize how many memories they share together. Taking off their equipment, Bart and Lisa embrace, ending the game in a tie.