Interstellar competitions have substituted warfare in 4999, and among them is a prestigious all-female tournament to determine the "Cosmo Beauty" champion. Akari Kanzaki joins University Satellite with the goal of succeeding her mother's previous victory and claiming the title. Through her early days at the institution, she establishes new relationships, confronts formidable foes, and strives tirelessly to rise up the ranks of the Battle Athletes.