After a devastating loss in the National Junior Badminton Tournament, Nagisa Aragaki's passion for the sport transforms into a dark obsession. Tormenting her high school badminton club with intense training, she drives some to tears and others to quit. As the club faces dwindling membership and a bleak future, hope arrives in the form of Kentarou Tachibana, an ex-Olympian who becomes the new coach. Armed with a secret weapon, Ayano Hanesaki, the girl who defeated Nagisa before, the team gets a chance at redemption. However, Ayano's reluctance to play again complicates matters. To save the club and herself, Nagisa must confront her insecurities, mend Ayano's fractured spirit, and lead Kitakomachi High School to victory on the badminton court.