Chen Shouyi, an old pig farmer, inherits a traditional ecological pig-raising method passed down through generations. It emphasizes following nature's rhythms and slowly raising pigs on mountain spring water, wild herbs, and mixed grains. The emerging corporate giant Wofeng Group seeks to monopolize local pig production quotas and forcibly absorbs independent farmers in the surrounding areas. Chen Shouyi takes his son, Chen Lin, and drives dozens of native black pigs into the misty, barren mountain land inherited and contracted by their ancestors, beginning a purely ecological free-range operation. Wofeng Group's reckless use of growth-promoting feed causes thousands of pigs to develop osteoporosis and cracked limbs, bringing its entire operation to the brink of collapse. Meanwhile, Chen Shouyi remains committed to traditional craftsmanship and patient farming, leading his neighbors toward a path of prosperity through high-quality, environmentally friendly agriculture.