A young woman named Chitose Karasuma has entered the adult world determined not to do anything boring. To achieve her goal of success, she crashes into a facility for aspiring voice actors and lands a job at "Number One Produce," an agency managed by her older brother Gojou. Despite her high expectations, Chitose struggles with getting minor roles and clashing with other girls in the agency, including a clever airhead and a girl from Kansai. Soon, she will discover that achieving success in this competitive industry requires more than she initially thought.