The protagonist, Kazuya Sato, was living an ordinary life as a typical salaryman, but one day he was suddenly reincarnated into another world. He expected to find a grand world where adventurers fought monsters and saved the world, but to his surprise, all he was given was a desolate farm plot and old farming tools. With no fighting prowess or magical talent, all he had left was his "farming skill."

Initially bewildered, Kazuya utilized his farming skill to till the soil and sow seeds, gradually cultivating crops. However, one day he fortuitously acquired a special fertilizer, which allowed ordinary crops to achieve astonishing growth, and he successfully harvested colossal vegetables and fruits unlike anything seen before. Furthermore, a mysterious effect emerged: those who consumed his crops experienced a dramatic, temporary boost in their combat abilities.

Kazuya's crops quickly became famous, and royalty and adventurers began visiting his farm one after another. His farmland eventually came to be known as the "Legendary Farm," and its harvests became incredibly popular throughout the kingdom. He was even hailed by others as a "hero who could save the world just by growing crops," but Kazuya himself remained exceptionally humble, wishing only to peacefully protect his farm.

However, enemy nations and powerful monsters, having set their sights on his farm, began to stir, and Kazuya found himself embroiled in an unexpected conflict. Just how far will the adventures of Kazuya, the farm owner who saves the world with his crops, truly extend in this other world—?