Wakaba Kohashi, a sheltered rich girl, dreams of becoming a fashionable and trendy gyaru because she admires their outgoing and carefree nature. With this goal in mind, Wakaba begins the school year hoping to make her high school debut as a gyaru. On the first day of class, she meets the pure Moeko Tokita, the serious Nao Mashiba, and the eccentric Mao Kurokawa, and the four of them quickly become friends as they learn about and imitate each other's lifestyles.