"Wandaba Style - Mix Juice no Tsukurikata" centers on a group of high school girls who form an idol group called "Wandaba Style" with the goal of achieving fame and success. The narrative revolves around their journey to create a unique and captivating performance style that sets them apart from other idol groups. The series blends elements of comedy, music, and slice-of-life, focusing on the challenges and camaraderie of the group as they navigate the competitive world of idol culture.

The main characters include Yayoi Fujisaki, the determined and optimistic leader of the group; Aoi Sanada, a shy and reserved girl with a hidden talent for singing; and Miu Fujisaki, Yayoi's younger sister, who is energetic and often provides comic relief. Other members include the serious and disciplined Rika Tachibana and the cheerful and supportive Haruka Minami. Each character brings distinct personality traits and skills to the group, contributing to their dynamic and growth as a team.

The plot follows Wandaba Style as they experiment with unconventional performance ideas, such as incorporating elements of science and technology into their acts, to create a "mix juice" of entertainment. Their efforts are driven by a desire to stand out in a saturated industry, and they face various obstacles, including rival idol groups, personal insecurities, and the pressures of balancing school life with their ambitions. The series highlights their perseverance, creativity, and teamwork as they strive to achieve their dreams and leave a lasting impact on the idol scene.