As the wedding approaches, Xiao Yuan is severely abandoned by his fiancée Liu Yueyao and becomes a laughing stock.
When he was frustrated, an unexpected "absurdity" caused him to enter into a marriage contract with Gu Shiyu, a stunning woman with a mysterious background and decisive actions.
"You and I each take what we need, fair trade." She was cold and independent, but on her wedding night, she showed him her unknown vulnerability and dependence.
He is an unknown little draftsman in the Ministry of Industry, but he possesses unparalleled mechanical skills. He is the legendary "ink artist" who can see the dragon but never see its end.
She is a small steward of Xiuzhuang who claims to have a monthly salary of nine taels, but she can easily mobilize huge wealth and deal with the powerful. She is the "jade-faced Rakshasa" in charge of a huge business empire.
How will two smart people wearing vests test and get along in this seemingly expedient marriage, and finally discover each other's true identities?
When a crisis comes, will they join forces to fight the enemy, or will they be jealous and separated?
And what kind of regretful drama will the ex regret about?
