In the winter of 1989, Zhou Ye is gravely injured by a giant red snake while saving the biological son of his adoptive parents, Zhou Dacheng, and becomes mentally impaired for three years. His wife, Shen Qiuhe, struggles through hunger and cold with their five-year-old daughter, while the Zhou family pressures her to remarry to pay off their debts. Just when his wife and daughter are at their breaking point, Zhou Ye suddenly regains his senses and discovers that his consciousness is connected to a red snake deep in the mountains, giving him a second, powerful body. From then on, his human body protects his wife and daughter and runs a mountain produce business, while his snake body hunts and scouts ahead. Meanwhile, he secretly faces his adoptive parents' favoritism, his elder brother and sister-in-law's schemes, and the relentless traps laid by grain merchant Wu Dechang. Together with his wife and daughter, Zhou Ye fights for food, builds a house, opens a shop, and overcomes disasters and conspiracies to reclaim justice and create a new life.