Yun Nian, a master of poison and medicine, suddenly dies and is reborn in a book as the fourth daughter of the Duke's estate, notorious for becoming pregnant out of wedlock. And she's saddled with two little tagalongs!
She can put up with the tagalongs and even being a mother, but she won't stand for the twins calling her a wicked woman and a cruel mother!
Yun Nian angrily tosses aside the script. She refuses to be an evil stepmother. If she's going to be a mother, she'll be their real one!
She promptly clears her name, takes the two children to punish villains and put arrogant snobs in their place, and enjoys one stroke of good fortune after another.
Then, while she was at it, she found the two children a father.
Elder son: Mother, we don't want a stepfather.
Younger child: But this prince has powerful connections. We can cling to him!
He's the mad and brutal former crown prince. On their wedding night, she smacked him in the face with her stinky sock. But her medical skills are superb, she can deal with scheming women with words and eliminate traitors with force. Not only can he not kill her, he has to raise her children! Is this deal a loss or a bargain?
Yun Nian: I can cure poison, punish villains, and raise children. You're making a killing!
Later, the elder child becomes crown prince, the younger one becomes an imperial princess, and she becomes the most revered woman in the land.
Yun Nian thinks to herself: It really was a bargain...