The protagonist Tang Zhen, an ordinary college student in a modern city, encounters flash floods and heavy rains on his way to the countryside to teach, and accidentally travels back to the late Tang Dynasty. He was rescued by local villagers, but unfortunately, he lost his vision and part of his hearing during the crossing. In this turbulent era, he must rely on his own wisdom and historical knowledge to survive. Despite facing many difficulties, Tang Zhen is determined to use his modern knowledge to help the villagers improve their lives, while also finding a way to return to modern times. However, as he gained a deeper understanding of this era, he discovered that his time travel was not accidental, but was involved in a big situation related to the direction of history. While adapting to his new life, Tang Zhen gradually uncovered the secrets of his time travel and found his own position in the troubled times of the late Tang Dynasty.