Lin Nian, a doctor accompanying the modern peacekeeping force, accidentally traveled to the body of a twelve-year-old girl with the same name from an ancient mountain village. He was beaten to death by his step-grandmother for stealing half a piece of black bun and sold to a recently deceased 60-year-old rich man to be buried with him (a ghost marriage). Thanks to the "Iron Egg Lady" who notified Lin Nian's grandmother Zhou (who had been widowed for many years) all night long, she was able to snatch Lin Nian's "body" back from the Lin family... Lin Nian, who woke up (time traveled), used his modern knowledge to shoulder the burden of supporting the family.
Many days later, Lin Nian, who was able to support his family, rescued his dying lover Xiao Qi in the woodshed of the Zhou family's old house. At the same time, he and his lover Xiao Qi, who had time-traveled into the body of the current seventh prince Xiao Qi (who was being chased by other princes), were rescued.
A pair of lovers who met in ancient times fought side by side again, overcame many difficulties, fought off all kinds of resistance, and successfully pushed the seventh prince Xiao Qi to the throne. After several years of "time changes", an ordinary twelve-year-old girl in a mountain village gradually became a mother who can support the "country".
