Han Shoushan, an elderly transmigrator, has guarded a mountain gate in the world of immortal cultivation for sixty years, remaining stuck at the third level of Qi Refining and enduring constant bullying from his sect. At long last, his late-arriving elderly cultivation system activates, helping his cultivation soar. With the system's power, he sweeps aside formidable enemies and destroys numerous wicked sects, overcoming every obstacle along the way. He not only restores his son's damaged dantian and helps him embark on the path to immortality, but also fights alongside his daughter-in-law and a group of companions to resolve one crisis after another. In the end, father and son both become mighty cultivators and retire peacefully from the world.