When Koushi Nagumo loses everything due to a fire and his father's departure, he finds himself rescued by Mineru Wachi, who introduces him to the peculiar female dormitory 'Megami-ryou.' Tasked with being the dormitory mother, Koushi encounters a mix of quirky residents like the androphobic yet kind Atena Saotome, the girlish tomboy Kiriya Senshou, and the daringly reckless scientist Mineru. Amidst the chaos, Koushi embraces the challenges of his unexpected role in this lively and chaotic new home.