The story of a flower girl, Su Xiaowan who accidentally lands a "sibling contract" with Gu Yanxi, the eldest son of the prominent Jewelry-maker Gu Family. However, her journey proves to be tough as she has to handle Gu Yanxi's sharp tongue and ceaseless schemes. Thankfully, she has the gentle and warm Gu Ziqian by her side. However, Gu Ziqian has his own motives for getting closer to Su Xiaowan. As Su Xiaowan spends more time with the two brothers, she finds herself falling in love with the mean and arrogant Gu Yanxi instead.