After her family falls into ruin, the daughter of the Qin family is sold into servitude, renamed Qingzhi, and made a maid to Ye Mingzhu, the young lady of the Ye family.
The Ye family had once been deeply indebted to the Lin family, but when the Lins fell on hard times, they broke off the engagement and abandoned their old friends, humiliating Lin Zhao, the orphaned heir. Five years later, Lin Zhao places first in the military examinations and is made the Marquis of Xiping. Returning with old grievances to settle, he forces Ye Mingzhu to become his concubine. Qingzhi enters the marquis’s residence with her as a maid.
On his wedding night, Lin Zhao refuses to touch Ye Mingzhu and takes Qingzhi away instead. From that moment on, Qingzhi becomes a pawn in Lin Zhao’s revenge against the Ye family, and the person Ye Mingzhu hates most.