After her family falls from grace, He Jinshu is sent to the imperial women's quarters to serve as a slave, where she suffers under the cruel treatment of the eunuch Wang De'an. By chance, she touches an ancient bronze mirror and finds herself in the modern world, at the Gu family's home. Using her traditional craftsmanship, she establishes a place for herself there. Through the mirror, He Jinshu travels between the two worlds, transporting modern supplies to help her family survive. Wang De'an conspires with Chancellor Fang to spread rumors that she practices demonic sorcery. They fabricate evidence, imprison her family, and set fire to the abandoned palace in an attempt to silence them. She escapes back to the modern world and reveals her true identity. The righteous Gu family agrees to help her gather evidence using modern equipment. During the Empress Dowager's birthday banquet, the Emperor suddenly suffers a heart attack. Chancellor Fang seizes the opportunity to frame He Jinshu, but she saves the Emperor with modern medicine and presents irrefutable evidence exposing the conspiracy. After her wrongful conviction is overturned, she declines the rewards and titles offered to her, choosing instead to live quietly in the countryside. She later collaborates with modern businesses to promote traditional intangible cultural heritage crafts, finally finding a peaceful and fulfilling life.