‘Please leave quickly. I always thought that a plain-looking, clumsy maid like you didn’t fit in this mansion.’ The precious vase that the master of the mansion cherished was broken. The blame for this — the false accusation — fell on the plain and small maid, Nina. Nina, who was not well understood by those around her, handled all the mundane tasks in the mansion. Organizing scattered tools, purchasing seasonings and ingredients to suit the tastes of the master’s family and guests, completing the cleaning left undone by careless maids, making the reluctant young masters and young ladies study, returning counterfeit artworks, maintaining seasonal clothing, and so on. When Nina left, the mansion seemed to remain unchanged at first, but it gradually began to fall apart... but that was no longer Nina's concern. Nina, for whom being a maid was everything, decided to go on a sightseeing trip on a whim. And there, she would meet 'unfortunate' girls. Emiri, a mage with abnormal magical power but unable to use it effectively. Astrid, a brilliant inventor who, for some reason, can't make her experiments succeed. Tien, a moon wolf who can't eat the food and is starving, unable to use her full strength. Thanks to the omnipotent maid, Nina, these girls were able to bring out their true potential. When their powers were combined, they could easily match an army, but Nina never knew this.