Saved from years of bullying in the Liu family by Yu Lan, Liu Moran was groomed as her future daughter-in-law. But when she discovered her fiancé Yu Jin's affair with her sister Liu Xiyu, she turned her attention to Yu Zhan, partly as an informant placed by Yu Lan and partly to uncover the truth behind her family's ruin. As they tangled in a web of emotions, genuine feelings blossomed between them. Despite knowing Liu Moran's true intentions and spy role, Yu Zhan couldn't help but fall in love. After numerous tests, Liu Moran gradually opened her heart. When the past repeated itself and she learned that Yu Lan was behind her family's downfall, they united against Yu Lan and the Lan family, ultimately resolving the crisis at Yu's Corporation and revealing the truth.
