When Noya Itsuki enrolls at Ebisugawa High School, his passion for space leads him to join what he thinks is the Astronomy Club. To his surprise, he stumbles into the Asstronomy Club, comprised entirely of female otaku. Perceiving the eccentricity of the members, Itsuki remains oblivious to his blunder, plunging headfirst into a peculiar and amusing chapter of his high school life.