After being unceremoniously fired from his adventuring clan, the Muddy Four Horns, a young man named Tori finds himself without a purpose. His former party members, who valued his skills as a cook and cleaner rather than a frontline fighter, dismiss him as they restructure into a more elite group. Wandering the streets with no place to go, he is approached by a legendary figure known as the White Witch, the most powerful adventurer in the city. To his surprise, she has sought him out specifically to hire him.

Suspicious and expecting mockery, Tori tries to refuse by demanding an exorbitant salary, only for the witch to accept without hesitation and lead him to her isolated cottage in the woods. Upon arrival, he discovers two shocking truths. The formidable, elderly woman he met is merely a disguise, and the real White Witch is a beautiful but incredibly lazy young girl named Euphemia. Her home is also a complete disaster zone, a filthy mess that reflects her slovenly lifestyle. His first job is simple: clean the house.

The story follows Tori as he settles into his new role as the witch's live-in caretaker, responsible for all domestic duties including cooking, cleaning, and running errands for Euphemia and her three familiars. The narrative balances two central elements. On one hand, it is a slow-life story focused on the quiet, domestic routine of maintaining a home in a remote frontier setting. On the other, it develops a relationship between Tori, who struggles with feelings of inadequacy and self-hatred after being discarded by his former comrades, and Euphemia, who possesses immense magical power but lacks basic emotional knowledge and social grace.

A notable narrative arc revolves around Euphemia's desire to keep Tori by her side forever. Her solution is not simply romantic, but a grand, pragmatic gesture: she decides to solve all of Tori's lingering problems from his past, including those affecting his former friends, to ensure he has no reason to ever leave her side. This quest drives much of the plot, leading to several action sequences where Euphemia displays her overwhelming strength in battle. Notably, Tori himself remains uninvolved in these fights, staying home to cook and clean, as he genuinely possesses no significant combat ability. The dynamic is compared to a gender-reversed domestic arrangement, where a capable man brings order to the chaotic life of a powerful but helpless woman, all while a possessive and affectionate relationship slowly develops between them.