Nagumi Koushi is a 12-year-old kid who was deserted by his broke dad after their home burst into flames, leaving him to wander the roads poor. Then, at that point one day, a young lady named Minerva who discovers him lying on the walkway takes him to a ladies' school residence, one known for lodging inconvenient occupants, and requests that he be their "Quarters Mother." Surrounded by more seasoned ladies and compelled to manage their eccentricities, Koushi begins his new (to some degree ecchi) life!