Male protagonist Lu Yun transmigrates to the Great Ning Dynasty, becoming a good-for-nothing driven out by his family and prone to domestic violence against his children. He activates the Daily Opportunity System, reforms his past bad habits, protects his three children Lu Ling'er, Lu An, and Lu Ning, and continuously gathers cultivation techniques and spiritual items to enhance his strength. He successively defeats enemies' conspiracies, kills villains, acquires the Innate Five Elements Spiritual Body, and embarks on the path of immortality. He takes his children to Sanfeng Market to avoid disaster, reading and raising his children on one hand while fighting against various forces such as the Black Fiend Sect and Qingyang Sect on the other. Opportunities are endless, and crises follow one after another, struggling to protect his family amidst flashing swords and mortal fireworks.