Charlie Brown, Tyler James Nathan is determined to win this year's baseball game, but the opposing team is led by Peppermint Patty, Lexi Perri, who has won every year since she moved into town. While trying to get a head start on practice, Sally, Hattie Kragten, says Charlie Brown promised to let her try out for his team when she turned five. He allows her to join their practice session, but she ultimately proves she has no skill at the sport, meaning she can't join the team.
Peppermint Patty and her team unexpectedly show up at their baseball field to intimidate them. Charlie Brown tells his team not to let it get to them, saying they just need to practice more. But just as they are about to restart practice, Sally notices a dandelion on the pitcher's mound and grows immensely attached to it. This annoys the rest of the team, since she refuses to let them use the pitcher's mound as long as the dandelion is there. Charlie Brown tries to compromise by practicing around her, but this proves unsuccessful.
That night, Charlie Brown goes home, expecting Sally to get bored and leave soon. When he shows up at the field the next morning, he is surprised to see her still by the dandelion. The team becomes even more fed up with both her and Charlie Brown for not having better control of the situation. He turns to Lucy and pays her to talk Sally out of protecting the dandelion. Instead, she becomes inspired by her rebellion and rallies behind her cause. She takes things to the street and inspires all the kids in the neighborhood to help the dandelion, including the rest of Charlie Brown's team (excluding him).
As the baseball field becomes a festival dedicated to the dandelion, Charlie Brown tries again to convince Sally to get over it, but she sings a song about how important the dandelion is to her:
> It's The Small Things, Charlie Brown
Peppermint Patty and her team arrive at the field, but are surprised by what it has turned into. It is then decided that if they can't play on the field, Charlie Brown's team loses by forfeit. Now blinded by his ambition of victory, he tries to dig up the dandelion. Sally opposes him, leading to a scuffle that accidentally kills the dandelion. Sally and the rest of the kids are saddened by this, and they all leave the field. Though the game can finally start, Charlie Brown decides to put it on hold to find his sister. He catches up to her and apologizes, realizing how much the dandelion meant to her and respecting the community she was able to foster with it. The dandelion then blooms in her hands as she accepts his apology.
The kids are all seen caring for the field, planting more flowers for it. The team gets a new name (The Dandelions), and Sally becomes assistant manager to Charlie Brown. Together, they are determined to beat the opposing team, but it abruptly cuts to a score of 0-100.
