Luo Mingzhu, the legitimate daughter of the Marquis of Yong'an's household, seems unloved and has no say in her own marriage. In reality, she secretly runs Wanzhen House, the Great Yan Dynasty's largest trading company, making her the capital's most well-hidden magnate.
From the start, her fiancé, Prince Anping Xiao Chengyu, and her half-sister Luo Yunrou get her drunk and frame her. She is supposed to be sent to a playboy's tent to have her virtue ruined, but she accidentally stumbles into Regent Huo Yuan's tent and spends the night with him.
When she wakes, she leaves behind her jade pendant and runs, planning to deny everything. But Huo Yuan arrives at her door with the pendant in hand to propose, setting the capital abuzz.
After marriage, she appears demure and obedient, while inwardly plotting to make off with her dowry, protect her business, and get a divorce before fleeing. Huo Yuan suffered a head injury years ago and can hear her thoughts alone. Thus begins the ultimate tug-of-war: she thinks she's fooled the whole world, while he has already heard every thought in her head. From then on, he acts cold while helping her punish scumbags and taking her side.
