Marginal#4, a high school idol group consisting of Atom Kirihara, Rui Aiba, and the Nomura twins L and R, aims to replicate the success of Pythagoras Productions' previous group Lagrange Point. While they strive for stardom, they face everyday challenges as high school students, including managing school life and maintaining their idol image. Their days are filled with tasks such as securing a club room and filming commercials, amidst their performances and interactions with their fan base, the Starclusters.