Motivated by a fierce determination to become an idol, Yuu Azuma—an ambitious first-year student at Joshuu East High School—sets out to create an idol group. To achieve her goal, she selects one girl from each of the four high schools in her region (north, east, south, and west), and soon assembles her teammates.
Joining Yuu are Ranko Kashima, a refined second-year at Holy Teneritas Southern Girls’ Academy known for her distinctive curly hair and admiration for Ochou-fujin ("Madame Butterfly"); Kurumi Taiga, a student at West Tech Vocational High School who favors cute, oversized jackets with long sleeves and aspires to win a robotics competition championship; and Mika Kamei, a student from Joshuu North High School recognized for her kind nature and commitment to volunteer work.
With assistance from Shinji Kudou—Yuu's "collaborator" and trusted confidant—these four girls embark on the path to stardom. However, the journey conceals unforeseen challenges, harsh demands, setbacks, and pressures that threaten to unravel everything Yuu has worked so hard to build.