At a baseball game, the Royal Woods Kangaroos are playing against the Hazeltucky Hockers. It's the top of the ninth inning, and the kangaroos are losing 8-1. When Lynn orders Margo to pitch the ball, she accidentally throws it out of batting range, with the umpire calling out "ball". After calling a time out, Lynn tells Margo to bench and calls for Paula to the mound. After (slowly) getting to the pitcher's mound, Paula pitches the ball, and the batter manages to get the ball over the fence, solidifying Hazeltucky's win.
In Vanzilla, as a disgruntled Lynn rides with Lynn Sr., Lynn tells her father that her team hasn't won a game all season, and says that she can't be a pitcher for the team, as she's prohibited from doing so after throwing a baseball at the mascot of a rival team called the Bruinstown Billygoats. At that moment, Lynn Sr. discovers farm fresh eggs being sold, and decides to stop by and get some. When a farmer asks Liam, who's running the farm stand, asks for a dozen cow pies so that he can get his tractor running again, Liam obliges and proceeds to hurl the cow pies at the tractor, revealing his incredible pitching ability. Amazed at Liam's throwing, Lynn asks him if he would like to play baseball, and he agrees. The next day, Lynn attempts to train Liam into throwing a baseball. At first, Liam struggles, saying that a baseball doesn't feel the same as a cow pie, but Lynn tells him that he just needs to practice more. After some trial and error, Lynn tells Liam to not think about where he wants the ball to go, and when Liam does as instructed, he successfully gets the ball into the mitt of one of his pigs being the catcher. With his skills perfected, Liam is officially on the team.
During the next baseball game, Liam is ready to be the team's pitcher. When the umpire starts the game, Liam's pitching skills result in the Kangaroos winning their first game of the season 9-0. As the other teammates congratulate Liam for leading them to victory, Lynn arrives and says that they need to practice if they want to keep on winning, and tells Liam that he'll be pitching in all of their games. As the game progress, Liam continues to lead the Kangaroos to victory, but realizes that his pitching arm is starting to become more and more sore after every game. After winning a game puts the Kangaroos in a tie with Hazeltucky for the most wins, Lynn tells her team that they need to practice if they want to the win the next game, which would declare them champions of their division. As they practice, Liam's arm gives out and can't pitch anymore. When Liam says that the championship game is tomorrow, and his injury would require days of rest, Lynn says that she knows who can help.
At the Loud House, Lisa attempts to help realign Liam's arm muscles so that he can pitch again. After being zapped by her machine, Liam doesn't feel much pain, but when he tosses a ball to test his arm out, he gets a cramp and ends up hitting Lola, who is bouncing on a pogo stick while listening to music. Suddenly, Lucy appears and says she knows how to help. At the cemetery, Lucy is preparing a potion, and after saying a chant, she drops a dollop of her potion onto Liam's arm, and it successfully heals, as he can pitch like he used to.
The next day, the Kangaroos are playing against the Hockers in the championship game. During the first eight innings, the two teams are neck and neck with each other. On the top of the ninth inning, the score is 3-2 with the Kangaroos in the lead. The Hockers have the bases loaded, and the batter has two strikes, where getting one more would result in an out and declare the Kangaroos the champions. Unfortunately, when Liam pitches the ball, his arm pops and the umpire declares "ball". When Lynn asks for Lucy and Lisa, Lisa points out that his muscle tissues are injured and states that there's a 30% he can still pitch, but a 70% that his arm will be permanently injured. Despite this imbalance in odds, Liam decides to stick with the team. As Liam gets himself ready, Lynn discovers just how much Liam is in pain, and realizing she's letting him risk his health just for a victory, Lynn tells Liam to go to the bench so he can relax, and calls for Paula. After Paula reaches the mound, she pitches the ball, and the batter ends up hitting the ball over the fence, giving the Hockers enough points to beat out the Kangaroos and receive the championship title of their division. Despite losing, Lynn encourages Paula that she can help her with her pitching, and Liam says that even though they lost, he still had fun.
Pep and Margo have no lines in the episode.