Modern young man Lin Zhao and his four companions accidentally find themselves transported to the fourth year of the Xuanhe era of the Northern Song Dynasty. They settle in Qinghe Village at the foot of Long Mountain. Seeing the villagers repeatedly troubled by bandits and struggling to make ends meet, they decide to stay and help. Led by Lin Zhao, they work with the villagers to repair homes and look out for one another. His companions each take on different tasks: opening a medical clinic to save lives, researching craftsmanship to improve farming, and studying for the imperial examinations to build a better future. By forging friendships throughout the village and helping the weak, they repeatedly overcome crises through their intelligence and hard work, earning the villagers' affection and the admiration of local officials. Though the world remains troubled, all they want is to protect this land, ensure that the young and old of Qinghe Village can live in peace and prosperity, and carve out a place for themselves in this unfamiliar era.