Yang Xiao found an ancient bronze mirror in an antique shop. Drawn to the mysterious light within it, she touched the mirror and transmigrated to the ancient world, where she stood bewildered on a bustling street.
While leading a team in pursuit of bandits, Li Ning, an ancient constable, spotted Yang Xiao in her strange clothes. Mistaking her for an accomplice, he arrested her and took her back to the yamen.
At their first meeting, Yang Xiao was intimidated by Li Ning's authority, while he was wary of and curious about the strange things this woman said and did.