Disowned, disgraced, and doomed to be a farmer, Chris Sparring’s life as the eldest son of a noble sword-fighting family comes to a sudden end at the Heaven’s Blessing Ceremony. While his twin brother Claus receives the divine affinity of a “sword god,” cementing his place as the family heir, Chris is cursed with the lowly class of “farmer”. This humiliating blessing is treated as a death sentence in a society that values martial prowess, and Claus wastes no time channeling years of hidden jealousy into a violent attempt on Chris’s life.

Left with nothing, Chris flees into the wilderness, vowing to destroy his brother and reclaim his name. Though his farmer affinity is considered useless, it comes with a unique and powerful passive skill: complete poison resistance. In this fantasy world, consuming poisonous plants is normally fatal, but for Chris, each toxic meal functions as a power-up, allowing him to raise his stats and grow stronger. Rather than tilling fields, Chris spends his days foraging in the wild, ingesting lethal flora to gain an edge for his revenge.

Chris eventually registers as an adventurer, despite his farming class, and forms a party built purely on pragmatism rather than friendship. He recruits Hester, a talented mage, and Ralph, a paladin, viewing their superior affinities as tools to be used toward his goal of killing Claus. The trio’s early dynamic is cold and transactional, with Chris narrating every interaction in terms of usefulness and investment. However, as they journey from rags to relative riches, Chris begins, very slowly, to see his companions as fellow humans rather than mere assets.

The overarching narrative follows Chris’s relentless pursuit of vengeance against his cartoonishly cruel brother and the noble family that cast him aside. Along the way, he adopts other broken outcasts and builds a surrogate family of people who, like him, have been discarded by society. Though the story’s title promises a focus on farming, the first volume centers instead on foraging, poison consumption, and sword fighting, with the protagonist using his disgraceful green thumb not to grow crops but to cultivate deadly toxins for his revenge.