Thirteen-year-old Alexandra "Al" Olsen, a seventh grader at Brinkley Middle School, tries out for the boys' baseball team at her school. The new coach welcomes Al and her skills to the team alongside her nonbinary friend, Julian Veras. However, when Al is interviewed on local television for being the first girl on Brinkley's team, it leads to problems with her teammates. The team will have to solve their problems and join together if they want to defend their championship title.