The protagonist, Lin Yuan, was originally an extremely talented swordsman in the world of cultivation. He was assassinated and fell when he was trying to reach the Mahayana stage. He accidentally traveled to the modern city and possessed the body of a cowardly and humiliated son-in-law with the same name. This world has thin spiritual energy, but it has highly developed technology and complex social relationships. Lin Yuan relied on the extraordinary strength and wisdom accumulated in his previous life to start a counterattack. At the same time, he met many heroines with different personalities and staged romantic legends.