After her mother dies, revenge is all that remains in Lu Yao's world.
Her scumbag father brings her home to bear a child for her legitimate older sister, so the sister can keep her husband's favor. He demands that Lu Yao give birth to a child for his frail, sickly daughter.
Lu Yao pretends to let them control her.
She lets them send her to the bed of Duke Zhongyong, a peer of the highest rank.
She carefully schemes to win Dou Jingxiao's love, step by step, and make those who harmed her mother suffer a fate worse than death.
But she never expected Dou Jingxiao to have understood all along that she was using him.
After her revenge is complete, the man refuses to let her go.
Dou Jingxiao: I don't believe you never loved me.
Lu Yao, expressionless: Someone like me doesn't have a heart.