In a border town in troubled times, Lan Jinshu, the daughter of a merchant, takes the initiative to approach the forbearing general Dongfang Lie to seek cooperation in order to save her wronged father. She exchanges her sharp tongue and precise calculations for military supplies orders, but she does not know that the general is hiding a secret edict to restore the country; the two test each other in the border storms, and develop from a marriage of interest to a life-or-death partnership; the powerful officials in the court secretly control food prices and military affairs, and Lan Jinshu takes the risk of using karate to obtain intelligence from the enemy; The general was captured in an ambush and lost his memory. She independently took charge of internal affairs and planned to force the enemy to retreat. After the truth was revealed, she discovered that the destruction of her family was the fault of the general's old subordinates, and friendship and hatred were intertwined. After the general regained his memory, the two teamed up to bring down the mastermind, but faced the new emperor's attempt to destroy the bridge. In the end, Lan Jinshu used all his family property to redeem the general's life, and the two retreated from the world. Yu, a border town, witnessed a love affair in troubled times.
