Lin Mo, captain of the National Museum’s archaeological team, unexpectedly transmigrates to the Song Dynasty and becomes a low-ranking servant at the Great Nuo Office. With an archaeologist’s keen eye, he quickly adapts to this otherworld filled with “evil spirits.” Under constant surveillance and facing danger, Lin Mo must rise above his station, find a way back to the modern world, and uncover the secrets of the bronze mask and this strange realm. Can he survive in the mysterious Great Nuo Office of the Song Dynasty and discover the truth?