Sakura Hibiki is your common highschool lady, with a voracious urge for food. Noticing her garments tightening in lieu of her slowly increasing waistline she decides to look into enrolling in the close by gymnasium. There she runs into a woman from her grade named Souryuuin Akemi. Akemi, who has a muscle fetish tries to get Hibiki to enroll in the gymnasium regardless of its excessive ratio of macho males. Thankfully an exquisite coach, Machio, seems and unknowingly convinces her to enroll and begin her quest to an amazing physique.