In the late Northern Song Dynasty, the Jingkang Revolution was about to come. Xiao Heng, a young scholar, cherishes his family and country. However, in a sudden disaster in Bianliang, an ancestral "Moon Jade" is involved in the turbulence of time and space, and he suddenly falls into the modern city a thousand years later.
The neon lights are dazzling, the traffic is weaving, and Xiao Heng, who is dressed in weird clothes, instantly becomes a wanderer in the bustling city. The language barrier, pennilessness, and the huge cultural gap made him feel like he was in hell. On the verge of despair, he met the kind-hearted modern girl Lin Wei. With her help, Xiao Heng began a difficult modern life: from making fun of toilets and electric lights, to learning languages and making a living (either relying on ancient calligraphy, or experiencing the hard work of the bottom), the violent collision of values impacted his Confucianism at all times.
However, the secret of the "Moonlight Jade" has attracted the covetous attention of the mysterious organization "Light Chasers", and it is surrounded by dangers. While Xiao Heng is looking for a way back home and looking up ancient and modern clues, he is deeply involved in the growing emotional entanglement with Lin Wei and the risk of his identity being exposed. When the "Light Chaser" conspiracy approached its climax and the time and space passage reappeared, the cruel scene of the end of the Northern Song Dynasty made Xiao Heng heartbroken. Should he return to his hometown that is doomed to overthrow and share the hardships with his relatives, or should he let go of the past and find new life in this modern world that he once regarded as a "demon world" and practice the "Tao" in his heart? This is a struggle for survival, cultural journey and soul choice that spans thousands of years. In the torrent of destiny, how will he place a heart that bears the imprint of two eras?
