High school girl Nanako Usami became her town Nagarekawa's local idol at the request of her uncle. She and her upperclassman Yukari- a girl who seems perfect but ends up being air-headed- both become idols of their provincial area. They get interviewed (by the town's shopping center), go on television (low-budget cable), and hold concerts (on the roof of the department store). The girls' salaries come from the town's taxes. Together, the two form the "locodol" unit, Nagarekawa Girls.
A girl aiming to become an idol named Uzuki Shimamura is informed that she has been accepted into the Cinderella Project, a new project that collects girls and polishes them to become idols. After meeting Rin Shibuya, Mio Honda, and the other eleven fellow members of the group, the girls begin their journey at the 346 Pro talent agency, overcoming many trials and hoping to one day stand on the same stage as their senior idols.
Sūko is an idol-loving hikikomori (shut-in) who has one ability: To make any idol popular through the power of blogging. She puts her sights on the Fukuoka idol Itorio and tries to make her more popular, but she is impeded by the charismatic idol Ryūsan and the underground idol Mariko.
Super Sonico is an 18-year-old college student who plays guitar for the three-girl band Fastest Speed in Space and models for pin-ups. In spite of her busy schedule, she still finds time to her grandmother at her restaurant. One night, her band members Suzu and Fuuri are late to a concert, forcing her to play alone. The result of that show will have far-reaching consequences for Sonico.