As a new agency, AiRBLUE's roster consists of voice actresses with absolutely no experience. Hoping to refine their skills and build confidence at a steady pace, the girls are startled when their agency head, Masaki Ootori, announces that they will participate in an audition for Bloomball—a popular sports manga receiving an anime adaptation. Despite the overwhelming odds against them, each girl is now faced with a significant opportunity to make her debut in the unforgiving world of voice acting.