At twenty-seven, office worker Satsuki Mochizuki has hit a wall in almost every part of her life. Her long-term boyfriend, whom she believed she would marry, dumps her without warning. At work, she is stuck cleaning up after incompetent juniors. At home, her mother, who remarried shortly after her father's death, makes unreasonable demands. Satsuki has been largely on her own since high school, putting herself through university with money borrowed from her grandparents. Desperate for an escape, she tries solo camping and discovers she genuinely enjoys the peace of a quiet campsite.

That campsite is run by Inari, a mysterious and somewhat pushy fox deity who can appear as a middle-aged man in the human world or as an enormous, fluffy fox in his true form. Inari offers Satsuki a deal she cannot easily refuse: buy a mountain. The price is within reach because Satsuki has saved the wedding fund she now will not need, plus a small inheritance from her grandparents. More importantly, the mountain lies not in Japan but in another world, connected by a tunnel that only opens to those who have made the purchase. Tired of being taken advantage of in her mundane life, Satsuki quits her job and accepts.

The mountain is a wilderness with no infrastructure. Satsuki begins with nothing but a tent, camping gear bought at a Japanese home center, and a magical tablet given by the local gods of the other world. The tablet functions like a game interface, displaying quests, maps, and the mountain's condition. Her start is rough: hauling water, protecting food from beasts, and sleeping on the ground. But Satsuki is stubborn and resourceful. She slowly builds a routine, trekking back and forth between modern Japan to buy supplies and the other world to put them to use.

The other world is a fantasy realm where magic, spirits, and divine beings are ordinary. Satsuki bears the blessing of Ignos, a god of the world, though the blessing has a complicated effect. In her previous life in this world, Satsuki was a saint who was framed and executed by a corrupt prince. Reborn in Japan, the same blessing twisted into a curse that gradually eroded the affection of everyone close to her, partly explaining why her relationships and family ties kept failing. She has no memory of that past life, but the blessing still works in the other world, granting her an unconscious, cheat-like ability to nurture and empower the land around her.

As Satsuki settles in, she unknowingly makes the mountain evolve. Fertile soil appears, springs flow, and strange new plants grow. Her territory attracts a family of white wolves carrying the blood of the legendary Fenrir: parents Byakuya and Shirotae, and their pups Haku and Yuki. They become her contracted familiars, offering warmth, protection, and company. Later, spirits and other creatures drift onto the property, drawn by the growing abundance. Eventually, an ancient dragon sealed away by the gods awakens because of Satsuki's return, adding a more dangerous thread to the otherwise peaceful story.

Satsuki's immediate goal is simple: move out of the tent and into a real house. She works at earning currency in the other world, completing tasks from the tablet, and slowly gathering materials. She learns rudimentary magic, makes deals with merchants from nearby towns, and gradually turns a raw mountainside into a functioning homestead. Progress is slow but steady, and each small victory brings tangible comfort.

The narrative moves between two poles. In the other world, Satsuki enjoys a slow, self-directed life of building, cooking, foraging, and bonding with her animal and spirit neighbors. In modern Japan, she occasionally returns to buy supplies, untangle lingering financial and family issues, and confront the remnants of her old life. The contrast is deliberate: her otherworldly mountain becomes a refuge where her competence is rewarded and her efforts bear visible fruit, unlike the thankless grind she left behind.

Major arcs include establishing a stable food and water supply, taming and bonding with the wolf familiars, constructing a log house, dealing with encroaching monsters that test her defensive abilities, uncovering fragments of her forgotten saint past, navigating the reappearance of the slumbering dragon, and gradually attracting a small community of magical beings who make the mountain their home. Through it all, the story maintains a gentle pace focused on daily life, problem-solving, and the quiet satisfaction of building something worthwhile from nothing.