Something is wrong with the “soil”, rendering farmers unable to make money. Enthusiastic middle-aged farmer A-Ren switches to the tech industry, aiming to revive the soil by turning garbage into compost, with his family reluctantly supporting his dream. Meanwhile, An-he, who is nearing retirement, leads his family to cultivate the land using organic farming methods. Farming becomes not only a way of life but also an attitude towards life. As the cycles of nature unfold between the tug-of-war of ideals versus reality, two farmers — one old, one young; one calm, one energetic — will intersect amid the changing seasons of life.

這個故事，從一個天真浪漫的竹科工程師─阿仁說起⋯⋯ 阿仁在竹科同事的眼中，是一個「傻子」，他放棄大好前程與高收入，突發異想跑去農場「種土」，因為，「土壤」生病了？這個「因」來自過去，「果」卻開展在現在，同時牽動著「未來」。 《種土》紀錄片，不僅是兩個傻瓜的動人故事，更是一則當代的「寓言」。它正輕輕低吟：土壤運動… 土壤運動…。