A modern soul travels through time to become Ning Nan, a village teenager in the Great Jing Dynasty. As a person without household registration, he eagerly desires to change his destiny through knowledge and skills. By a twist of fate, he saves Zhu Cuiwei, the Prince of Xin, who was assassinated, fell into distress, and was living under an assumed name. The two come to know and understand each other while living together in the countryside. Ning Nan uses his extraordinary wit to resolve a mountain stronghold crisis, showcases his academic talent, and emerges in the literary scene. Facing undercurrents in the imperial court, the two join hands and hearts, collecting clues to ferret out the evil masterminds behind the scenes. The youth steadfastly holds to his original aspirations, cherishes righteousness, and takes responsibility. While seeking opportunities to establish himself and serve his country, he also reaps sincere romance, jointly safeguarding peace in the region and achieving self-growth.