As a new agency, AiRBLUE's roster comprises entirely of inexperienced voice actresses. The ladies are expecting to gradually refine their talents and gain bravery until the head of their agency, Masaki Ootori, informs that they will be participating in an audition for Bloomball—a popular sports manga that is being adapted into an anime. Despite the fact that the odds are stacked against them, each of the girls is now given a once-in-a-lifetime opportunity to make their debut in the arduous world of voice acting.