Shen Yan accidentally travels through time and, to protect his younger sister Shen Xiaoman, takes her place in a marriage into the Wei family. On the wedding day, he turns the wedding hall upside down and uses the disaster-relief warehouse that came with him to help his neighbors escape danger in a secluded mountain hollow. He repairs houses, channels water, opens a weaving workshop, and manufactures weapons. Joining forces with others, he repels rebel soldiers and clears unjust convictions. From an eloping young man, he builds Xinhe Town in the desolate hollow, a new home where everyone can live in safety. He also finds lasting love and understanding with Tang Zhixia, forging a path to survival with courage and compassion.