Lin Mo, a modern infrastructure engineer, accidentally traveled to the ancient Zhou Dynasty, a time of war and famine, and became a refugee on the frontier. With modern knowledge, he tried to build a paradise in the barren northern wasteland, starting from firing cement and improving farm tools. However, his "wonderful skills" and high-yielding crops touched the interests of local powerful and corrupt officials. The villain's agent, the old forces headed by the county lieutenant Zhao Mang, began to continuously obstruct and sabotage Lin Mo, framed Lin Mo for "deceiving the public with evil words", and tried to seize his technological achievements. At the same time, Lin Mo discovered that there is a legendary "cold-faced doctor" Ye Qiu in this world. She has great medical skills but aloof personality. She is exactly the woman he saw in the photo before traveling through time. The fatal secret is: Ye Qiu also comes from modern times. She traveled earlier and chose to practice medicine anonymously because she witnessed the horrors of war and plague, but in her heart she despaired of completely changing this backward era. Lin Mo's appearance made her see another possibility.
