After transmigrating into the body of the marquis's disowned daughter, scarred and exiled to the northern frontier, Mu Wantang binds herself to a System. She rises from selling ointments in the wasteland to becoming a mysterious merchant in the capital. To clear her name once and for all, she enters a contract marriage with the cold-faced Ninth Prince. They play husband and wife in public, but are allies in secret. When their business war escalates into a deadly political trap, her husband is exposed as the last surviving descendant of the previous dynasty. Meanwhile, every move made by the gravely ill emperor conceals a deadly plot to bury them both. This marriage began as a transaction, but in the end, will power and intrigue swallow their true feelings, or can love break through this dead end?
